Billisecond
毫微秒(十亿分之一秒)
🗣️ 情景例句
When he came to the States five years ago, he had only forty dollars in his pocket.
五年前他来美国时，口袋里只有40美元。
She was married against her will.
她结婚是有违本意的。
He himself has done it lots of times!
他自己就已戒了很多次了！