Undersurface
n. 下面, 底面\\na. 水面下的
🗣️ 情景例句
Not much.
马马虎虎吧。
Sorry, it's broken. You have to use the stairs.
对不起，它坏了，你只能走楼梯了。
I don't think you'll have any difficulty in pushing sales.
我认为你推销时不会有任何困难。