Undertread
n. 底胎面(指轮胎的加固层)
🗣️ 情景例句
I think I've seen you before, You look very familiar.
我想我以前在哪里见过你，你看起来非常面熟。
His necktie is behind the book case.
他的领带在书架后面。
Which may keep company with the vessel for an hour without visible or more than occasional movement of wing.
它们随船飞行一小时也难得见其扇动一下翅膀。