Underclay
n. (煤层下的)底黏土层
🗣️ 情景例句
How come you speak such good English?
你为什么能说这么好的英语呢？
The child behaved so rudely that he put his father to shame.
这孩子举止非常无礼，使他的父亲感到羞耻。
You forget that I was a medical student once upon a time.'
你忘了我以前是学医的了。”