Torulus
隆凸, 小圆凸
🗣️ 情景例句
I don't know if I can get to sleep.
我不知道我能否睡得着。
In college I majored in science, What was your major?
大学时我主修自然科学，你主修什么呢？
Sure.no problem at all.
当然，没问题。