Reguli
金属块
🗣️ 情景例句
It's a serious matter for a lot of us.
对我们许多人来说这可是个严重的问题。
When a dog is drowning,every one offers him drink.
待到狗溺水，众人给水喝。
How many different models of this do you offer?
这个你们有多少种不同的型式。