Protoungulata
原有蹄类
🗣️ 情景例句
I found it.
我发现了它。
If I had known her telephone number, I would have called her.
如果我知道她的电话号码，我就给她打电话了。
If he, or someone like him, were alive today, he might be able to tell us what to expect in the next fifty years.
如果他或是像他的什么人今天还活着的话，他大概可以告诉我们下一个50年后会发生什么事情。