Delabialization
唇化消失, 非唇化
🗣️ 情景例句
And don't forget to invite Susan for dinner.
别忘了请Susan来吃晚餐。
In every rank, great or small, 'Tis industry supports us all.
不论高的低的各级人士，所持的都是勤劳。
Oh!
噢！