Don't touch anything unless your teacher tells you to.
除非老师允许,否则你不要动任何东西。
Well, yes, I could do that. But I don't want to do anything alone.
哦,好,这事我能办。但我又不想一个人做事情。
Pierre and I borrowed the money and bought the necklace. During the next ten years we both worked day and night to pay back the money we had borrowed. That's why I now look so old. Well, after all these years we've at last paid back all the money.