A：Excuse me. Have you got any books on genetic engineering? I've looked for them everywhere,but I can't find any.打扰了。你们有基因工程的书吗?我到处找，但是找不到。
B：I'm not sure if we've got any now. Books of that kind are on this shelf. Well, I'm afraid we've sold out.我不确定我们现在是否有。那种书都在那个架子上。额，恐怕我们已经卖光了。
A：What a pity! I should have come earlier.好遗憾啊!我应该早点来的。
B：Come some time next week if you like. I think we'll have got some by then.如果你想要，下周找个时间过来吧。我想我们到时候会有的。
A：Ok, I will.好的。我会的。