Underclay
n. (煤层下的)底黏土层
🗣️ 情景例句
I never liked that umbrella stand.
我一直嫌那伞架碍事。
Why did you go there?
你为什么去那儿？
I'm sure you'll be pleased with this product.
我敢保证你会喜欢这种产品的。