Underclay
n. (煤层下的)底黏土层
🗣️ 情景例句
Don't worry, Richard.
别担心， Richard。
There's nothing like a cup of tea when you're thirsty.
当你口渴时，没有什么东西比一杯茶更好了。
How kind! Thank you.
你太好了！谢谢你。