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
But Dad is always so busy.
但是爸爸总是那么忙。
Fall sick and you will see who is your friend and who is not.
困难见友情。
Mary is still writing letters. She's been writing letters all day.
马力还在写信，她写了一整天的信。