Billisecond
毫微秒(十亿分之一秒)
🗣️ 情景例句
Leave nothing to chance.
做任何事情都要有把握。
Isn't that great?
你不是很好吗？
It is because his feet move on, but his head stays still.
这是因为他的脚动了，而他的头保持着静止。