Delabialization
唇化消失, 非唇化
🗣️ 情景例句
Why is that?
为什么？
What? Already? Won't you have more coffee?
怎么，已经要走了？要不要再喝点咖啡？
When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed.
不久前，一架轻型客机偏离了航线，在山区坠毁，飞行员丧生。