Billisecond
毫微秒(十亿分之一秒)
🗣️ 情景例句
I speak the Shanghai dialect and the Mandarin.
我会讲上海话，普通话。
I'll have to see about that.
这事我得想一想再定。
the line that the pen was drawing wriggled from side to side.
笔所画出的线就会左右摆动。