A:Which cold medicine is better?

哪种感冒药好一些？

B:I'd recommend this one.

我推荐这种。

A:Is this  medicine safe?

这个药安全吗？

B:Yes,it is over the counter.

安全，这药是非处方药。在柜台就可以买到。

A:No side effects?

没有副作用？

B:Just some that're written on the box.But I don't think any of them are particularly serious.

只有药盒上写的那些。但是我觉得没什么严重的。

A:I'd actually like to buy some vitamins for my son.He's five months old.Can you suggest any?

我还想给我儿子买点维生素。他五个月大，你能给我推荐一点吗？

B:Sure.Here you are.This one is excellent.Just mix one drop of it with milk.

好的，给你 。这种非常好。只要在牛奶里滴一滴就可以了。

A:Ok,thank you very much.

好的，非常感谢。