Cavatition
空化作用
🗣️ 情景例句
I did my thesis on Sino-American Business Relationship.
我做的论文题目是中美贸易关系。
I asked him to come with me , but he wouldn't.
我请他和我一起来，但是他不肯。
Be careful. It's dangerous. You're too high.
小心。危险！你上得太高了！