Separatrix
n. [自] 分界线；分隔号
🗣️ 情景例句
I've known Martin for years.
我认识马丁好多年了。
When did you do homework?
你什么时候做家庭作业？
Let's go together then. I'll meet you at the theatre at six-thirty.
到时咱们一块儿去看吧。我六点半在剧院跟你会面。