Tfr
[医][=total fertility rate]总生育率
🗣️ 情景例句
I always wanted to travel to Europe but I was afraid that language would be a problem.
我总想去欧洲旅游，但我又怕语言是个问题。
Strong packing will protect the goods from any possible damage during transit.
坚固的包装可以防止货物在运输途中受到任何损失。
The more you order, the more you will save.
订购愈多，省的钱愈多