Sigma.
[医] 千分之一秒
🗣️ 情景例句
He thinks he'll be accepted,
他觉得他会被录取。
And they are very proud of their son's success in getting a scholarship to Harvard.
他们为儿子获得哈佛的奖学金页感到非常自豪。
The bird covered the distance in three minutes.
这只鸟只用了3分钟就飞完了全程。