Biospeleology
n. 穴居生物学
🗣️ 情景例句
Are you traveling alone or whth a friend?
你是一个人旅行还是结伴旅游？
Which one is cheaper?
哪一个是较便宜的？
We can negotiate the unit price for large orders.
如果大量订购，单价可以再谈。