We couldn't understand them because they were talking in Chinese.

　　我們聽不懂他們在講些什么，因為他們說的是漢語。

　　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.

　　告訴他們這確實不夠好。