Holothuroidea
海参纲
🗣️ 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。
No, I don't want to.
不，我不希望那样。
There is a table in the room.
客厅里有张桌子。