W.e.f.
[医] 战时急用处方
🗣️ 情景例句
They mentioned you as a good source of information.
他们说你消息灵通。
On the way back home,we had a flat tire.
在途中回家,我们有一个轮胎破了。
Ethanol is more effective at a concentration of 50-70 percent;
乙醇的浓度为50％至70％时比较有效，