Mammoth cave
猛犸洞穴（美国）
🧩 词语组成解析
mammoth
['mæməθ]
n. [动]猛玛（象）;庞然大物;
adj. 庞大的，巨大的;
🗣️ 情景例句
How are you?
你好吗？
What has the captain ordered us to do?
船长命令我们做那些事？
the waters flow more quietly, and in the end, without any visible break,
河水流得平缓起来，最后连绵不断地