We couldn't understand them because they were talking in Chinese.
我們聽不懂他們在講些什么，因?yàn)樗麄冋f的是漢語。
Those children need a firm hand to make them behave.
那些孩子得嚴(yán)加管教。
We said we would keep them.
我們說過要保存它們的。
Tell them it's just not good enough.
告訴他們這確實(shí)不夠好。