Delabialization
唇化消失, 非唇化
🗣️ 情景例句
In less than two hours,
在不到两个小时之后，
There is nothing which has not been bitter before being ripe.
事情在成功前没有不艰苦的。
Why on earth didn't you tell me the truth?
你到底为什么不跟我说实话？