music(player): 变速播放 + AB Loop

- 变速：底部 1× 圆形按钮循环切 0.5/0.75/1/1.25/1.5；preservesPitch=true（浏览器 native 保音高）；localStorage 持久化全局
- AB Loop：A B 两按钮在当前位置打点，🔁 开关；进度条上绿色高亮 A↔B 区段；timeupdate 触发 ≥B 跳回 A；切歌自动清 A/B

apps/articulate/frontend/public/wordlists/nature.txt

@@ -0,0 +1,390 @@
+easy - tree - 树
+easy - flower - 花
+easy - grass - 草
+easy - leaf - 叶子
+easy - branch - 树枝
+easy - root - 根
+easy - seed - 种子
+easy - fruit - 水果
+easy - plant - 植物
+easy - bush - 灌木
+easy - forest - 森林
+easy - mountain - 山
+easy - river - 河
+easy - lake - 湖
+easy - ocean - 海洋
+easy - sea - 海
+easy - beach - 海滩
+easy - wave - 波浪
+easy - sand - 沙子
+easy - rock - 岩石
+easy - stone - 石头
+easy - soil - 土壤
+easy - mud - 泥
+easy - dirt - 泥土
+easy - water - 水
+easy - rain - 雨
+easy - snow - 雪
+easy - ice - 冰
+easy - cloud - 云
+easy - sky - 天空
+easy - sun - 太阳
+easy - moon - 月亮
+easy - star - 星星
+easy - wind - 风
+easy - storm - 暴风雨
+easy - thunder - 雷
+easy - lightning - 闪电
+easy - rainbow - 彩虹
+easy - fog - 雾
+easy - mist - 薄雾
+easy - dew - 露水
+easy - frost - 霜
+easy - fire - 火
+easy - flame - 火焰
+easy - smoke - 烟
+easy - ash - 灰烬
+easy - coal - 煤
+easy - diamond - 钻石
+easy - gold - 金
+easy - silver - 银
+easy - copper - 铜
+easy - iron - 铁
+easy - metal - 金属
+easy - mineral - 矿物
+easy - crystal - 水晶
+easy - gem - 宝石
+easy - pearl - 珍珠
+easy - shell - 贝壳
+easy - coral - 珊瑚
+easy - seaweed - 海藻
+easy - moss - 苔藓
+easy - fern - 蕨类
+easy - bamboo - 竹子
+easy - cactus - 仙人掌
+easy - palm - 棕榈
+easy - pine - 松树
+easy - oak - 橡树
+easy - maple - 枫树
+medium - willow - 柳树
+medium - birch - 桦树
+medium - cedar - 雪松
+medium - cypress - 柏树
+medium - elm - 榆树
+medium - ash - 白蜡树
+medium - beech - 山毛榉
+medium - poplar - 杨树
+medium - aspen - 白杨
+medium - sycamore - 梧桐
+medium - chestnut - 栗树
+medium - walnut - 核桃树
+medium - cherry - 樱桃树
+medium - apple - 苹果树
+medium - pear - 梨树
+medium - plum - 李树
+medium - peach - 桃树
+medium - apricot - 杏树
+medium - magnolia - 木兰
+medium - dogwood - 山茱萸
+medium - redwood - 红杉
+medium - sequoia - 巨杉
+medium - eucalyptus - 桉树
+medium - acacia - 相思树
+medium - mahogany - 桃花心木
+medium - teak - 柚木
+medium - ebony - 乌木
+medium - sandalwood - 檀香木
+medium - rosewood - 红木
+medium - ivy - 常春藤
+medium - vine - 藤蔓
+medium - creeper - 爬藤
+medium - climber - 攀缘植物
+medium - hedge - 树篱
+medium - shrub - 灌木
+medium - thicket - 灌木丛
+medium - undergrowth - 下层植被
+medium - canopy - 树冠
+medium - foliage - 叶子
+medium - blossom - 花朵
+medium - bloom - 花
+medium - bud - 花蕾
+medium - petal - 花瓣
+medium - stem - 茎
+medium - stalk - 茎秆
+medium - thorn - 刺
+medium - bark - 树皮
+medium - trunk - 树干
+medium - sapling - 树苗
+medium - seedling - 幼苗
+medium - sprout - 新芽
+medium - shoot - 嫩枝
+medium - twig - 细枝
+medium - stump - 树桩
+medium - log - 圆木
+medium - timber - 木材
+medium - lumber - 木材
+medium - firewood - 柴火
+medium - kindling - 引火柴
+medium - charcoal - 木炭
+medium - peat - 泥炭
+medium - turf - 草皮
+medium - sod - 草皮
+medium - lawn - 草坪
+medium - meadow - 草地
+medium - field - 田野
+medium - pasture - 牧场
+medium - prairie - 草原
+medium - savanna - 热带草原
+medium - steppe - 草原
+medium - tundra - 苔原
+medium - taiga - 针叶林
+medium - rainforest - 雨林
+medium - jungle - 丛林
+medium - woodland - 林地
+medium - grove - 小树林
+medium - copse - 矮树林
+medium - thicket - 灌木丛
+medium - scrubland - 灌木地
+medium - brushwood - 灌木林
+medium - wilderness - 荒野
+medium - wetland - 湿地
+medium - swamp - 沼泽
+medium - marsh - 沼泽
+medium - bog - 泥沼
+medium - fen - 沼泽
+medium - moor - 荒野
+medium - heath - 荒地
+medium - dune - 沙丘
+medium - oasis - 绿洲
+medium - canyon - 峡谷
+medium - gorge - 峡谷
+medium - ravine - 峡谷
+medium - valley - 山谷
+medium - dale - 山谷
+medium - glen - 幽谷
+medium - hollow - 山谷
+medium - basin - 盆地
+medium - plain - 平原
+medium - plateau - 高原
+medium - mesa - 平顶山
+medium - butte - 孤山
+medium - cliff - 悬崖
+medium - precipice - 悬崖
+medium - crag - 峭壁
+medium - bluff - 断崖
+medium - escarpment - 陡坡
+medium - slope - 斜坡
+medium - hillside - 山坡
+medium - foothill - 山麓
+medium - ridge - 山脊
+medium - crest - 山顶
+medium - peak - 山峰
+medium - summit - 山顶
+medium - pinnacle - 顶峰
+medium - volcano - 火山
+medium - crater - 火山口
+medium - caldera - 火山口
+medium - lava - 熔岩
+medium - magma - 岩浆
+medium - eruption - 喷发
+medium - geyser - 间歇泉
+medium - hot spring - 温泉
+medium - spring - 泉
+medium - fountain - 泉水
+medium - well - 井
+medium - stream - 小溪
+medium - brook - 小河
+medium - creek - 小溪
+medium - rivulet - 小河
+medium - tributary - 支流
+medium - rapids - 急流
+medium - waterfall - 瀑布
+medium - cascade - 小瀑布
+medium - cataract - 大瀑布
+hard - conifer - 针叶树
+hard - deciduous - 落叶树
+hard - evergreen - 常绿树
+hard - broadleaf - 阔叶树
+hard - hardwood - 硬木
+hard - softwood - 软木
+hard - sapwood - 边材
+hard - heartwood - 心材
+hard - cambium - 形成层
+hard - phloem - 韧皮部
+hard - xylem - 木质部
+hard - chlorophyll - 叶绿素
+hard - photosynthesis - 光合作用
+hard - transpiration - 蒸腾作用
+hard - respiration - 呼吸作用
+hard - germination - 发芽
+hard - pollination - 授粉
+hard - fertilization - 受精
+hard - propagation - 繁殖
+hard - cultivation - 栽培
+hard - horticulture - 园艺
+hard - arboriculture - 树木栽培
+hard - silviculture - 造林
+hard - forestry - 林业
+hard - deforestation - 森林砍伐
+hard - reforestation - 重新造林
+hard - afforestation - 植树造林
+hard - conservation - 保护
+hard - preservation - 保存
+hard - ecosystem - 生态系统
+hard - biodiversity - 生物多样性
+hard - habitat - 栖息地
+hard - biome - 生物群系
+hard - estuary - 河口
+hard - delta - 三角洲
+hard - fjord - 峡湾
+hard - sound - 海湾
+hard - strait - 海峡
+hard - channel - 海峡
+hard - archipelago - 群岛
+hard - atoll - 环礁
+hard - lagoon - 泻湖
+hard - reef - 礁石
+hard - shoal - 浅滩
+hard - sandbar - 沙洲
+hard - spit - 沙嘴
+hard - headland - 岬
+hard - promontory - 海角
+hard - peninsula - 半岛
+hard - isthmus - 地峡
+hard - coast - 海岸
+hard - coastline - 海岸线
+hard - shoreline - 海岸线
+hard - littoral - 沿海地区
+hard - tidemark - 潮汐线
+hard - high tide - 高潮
+hard - low tide - 低潮
+hard - neap tide - 小潮
+hard - spring tide - 大潮
+hard - tidal pool - 潮池
+hard - rockpool - 岩池
+hard - current - 洋流
+hard - undercurrent - 暗流
+hard - undertow - 回流
+hard - riptide - 离岸流
+hard - eddy - 涡流
+hard - whirlpool - 漩涡
+hard - maelstrom - 大漩涡
+hard - vortex - 漩涡
+hard - wave crest - 波峰
+hard - wave trough - 波谷
+hard - breaker - 碎浪
+hard - surf - 拍岸浪
+hard - swell - 涌浪
+hard - ripple - 涟漪
+hard - tsunami - 海啸
+hard - tidal wave - 潮汐波
+hard - storm surge - 风暴潮
+hard - monsoon - 季风
+hard - typhoon - 台风
+hard - hurricane - 飓风
+hard - cyclone - 气旋
+hard - tornado - 龙卷风
+hard - twister - 旋风
+hard - whirlwind - 旋风
+hard - dust devil - 尘卷风
+hard - sandstorm - 沙尘暴
+hard - blizzard - 暴风雪
+hard - squall - 狂风
+hard - gale - 大风
+hard - tempest - 暴风雨
+hard - deluge - 暴雨
+hard - downpour - 倾盆大雨
+hard - drizzle - 细雨
+hard - shower - 阵雨
+hard - precipitation - 降水
+hard - hail - 冰雹
+hard - sleet - 雨夹雪
+hard - snowflake - 雪花
+hard - snowfall - 降雪
+hard - avalanche - 雪崩
+hard - glacier - 冰川
+hard - iceberg - 冰山
+hard - ice sheet - 冰盖
+hard - ice shelf - 冰架
+hard - ice floe - 浮冰
+hard - pack ice - 浮冰群
+hard - permafrost - 永冻层
+hard - hoarfrost - 白霜
+hard - rime - 雾凇
+hard - icicle - 冰柱
+hard - stalactite - 钟乳石
+hard - stalagmite - 石笋
+hard - limestone - 石灰岩
+hard - marble - 大理石
+hard - granite - 花岗岩
+hard - basalt - 玄武岩
+hard - obsidian - 黑曜石
+hard - pumice - 浮石
+hard - sandstone - 砂岩
+hard - shale - 页岩
+hard - slate - 板岩
+hard - quartzite - 石英岩
+hard - schist - 片岩
+hard - gneiss - 片麻岩
+hard - conglomerate - 砾岩
+hard - breccia - 角砾岩
+hard - sediment - 沉积物
+hard - silt - 淤泥
+hard - clay - 黏土
+hard - loam - 壤土
+hard - topsoil - 表层土
+hard - subsoil - 底土
+hard - bedrock - 基岩
+hard - mantle - 地幔
+hard - crust - 地壳
+hard - core - 地核
+hard - tectonic plate - 构造板块
+hard - fault line - 断层线
+hard - earthquake - 地震
+hard - seismic - 地震的
+hard - tremor - 震动
+hard - aftershock - 余震
+hard - epicenter - 震中
+hard - magnitude - 震级
+hard - richter scale - 里氏震级
+hard - landslide - 滑坡
+hard - mudslide - 泥石流
+hard - rockfall - 落石
+hard - erosion - 侵蚀
+hard - weathering - 风化
+hard - sedimentation - 沉积
+hard - deposition - 沉积
+hard - alluvium - 冲积层
+hard - moraine - 冰碛
+hard - scree - 碎石堆
+hard - talus - 岩屑堆
+hard - boulder - 巨石
+hard - pebble - 卵石
+hard - gravel - 砾石
+hard - cobblestone - 鹅卵石
+hard - bedding plane - 层理面
+hard - stratum - 地层
+hard - outcrop - 露头
+hard - vein - 矿脉
+hard - ore - 矿石
+hard - deposit - 矿床
+hard - fossil - 化石
+hard - amber - 琥珀
+hard - petrification - 石化
+hard - mineralization - 矿化
+hard - crystallization - 结晶
+hard - gemstone - 宝石
+hard - emerald - 祖母绿
+hard - ruby - 红宝石
+hard - sapphire - 蓝宝石
+hard - topaz - 黄玉
+hard - amethyst - 紫水晶
+hard - turquoise - 绿松石
+hard - jade - 翡翠
+hard - opal - 蛋白石
+hard - garnet - 石榴石
+hard - quartz - 石英
+hard - feldspar - 长石
+hard - mica - 云母
+hard - graphite - 石墨
+