Polypedon
(土壤)多立体剖面
🗣️ 情景例句
I have a new math program, and I want to learn how to use it.
我有一个新的数学程式 我想学习怎样用。
When I left, he was at home.
当我离开的时候，他回家了。
Thank you.
谢谢。