Diprotodon
双门齿兽（生活于澳大利亚）
🗣️ 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。
I'm not strong enough.
我还不够强壮。
Why was that?
为什么呢？