Sigma.
[医] 千分之一秒
🗣️ 情景例句
Then, please tell him that Zhao Li called.
这样好了，请转告他赵力来过电话。
Today is the first day of spring.
今天是春天的第一天。
I've been working at a meat factory for about two months now.
大约两个月来，我一直在一家肉厂干活。