Billisecond
毫微秒(十亿分之一秒)
🗣️ 情景例句
He should just about get by in the exam.
他这次考试还能勉强及格。
Before you go on, I have a question.
在你接着干之前，我有一个问题。
On the third lap, the Class 3 and Class 1 runners both ran very fast.
在跑第三圈时，3班和1班的运动员都跑得非常快。