Cephalochordate
n. 头索动物\\na. 头索动物的
🗣️ 情景例句
Sit down, sit down.
请坐， 请坐。
The telephone is ringing,would you answer it,please?
电话正在响,你接吗？
You know what I'm talking about.
我想你知道我在说什么。