Biuniqueness
双向单一性
🗣️ 情景例句
We had a great time, Mom.
我们玩得非常开心，妈妈。
Man proposes, God disposes.
谋事在天，成事在人。
What was wrong with Jim ? Did he hurt himself?
吉姆怎么啦？他伤着自己啦？