Delabialization
唇化消失, 非唇化
🗣️ 情景例句
When he came to the States five years ago, he had only forty dollars in his pocket.
五年前他来美国时，口袋里只有40美元。
Look who's talking!
怎么不说你自己？
We are less credulous than we used to be.
我们不再像以往那样轻易相信别人了。