Diphthongic
a. diphthong的变形
🗣️ 情景例句
and sometimes there isn't.
有时候没有。
I feel very comfortable.
我觉得很舒服。
A short while ago, my sister helped me to carry one of my old bookcases up the stairs.
几分钟前，我妹妹帮我把一个旧书橱抬上了楼。