Sigma.
[医] 千分之一秒
🗣️ 情景例句
Do you have anything that must be claimed?
难道你没需要申报的东西吗？
Our foreign trade policy has always been based on equality and mutual benefit and exchange of needed goods.
我们的对外贸易政策一向是以平等互利、互通有无为基础的。
OK, I'll have a look.
好吧，我去看看。