Premandibular
下頜前的
??? 情景例句
Oh, so you don't need something immediately?
呵， 所以你們 ，不是急著馬上就要？
Let's stop discussing trivial details and come to the point.
咱們別再談瑣碎細(xì)節(jié)了，說正事吧。
I don't know. sir.
我不知道，先生。