Cumberland Plateau: Dissected Upland Where Coal, Karst, and Headwater Streams Converge
坎伯兰高原:煤炭、喀斯特与源头溪流交汇的切割高地
课文音频
Listen to the full story · 完整逐句/整段音频可在解锁后使用。
您仍可先看下方课文摘要;在阅读器可查看该书试读与权益说明。
课文
从第 4 课起,导读页仅展示部分正文,便于您了解难度与风格。
-
The Cumberland Plateau in southeastern USA is a dissected sandstone-capped upland rising 300–600 meters above surrounding valleys.
-
Its flat-topped ridges conceal extensive coal seams formed from Carboniferous swamps buried under sedimentary layers.
Unlock full vocabulary & bilingual guide · 完整课文、逐句音频与全部译文请在解锁学习权益后于阅读器中查看。
Improve faster解锁本课完整体验