没关系:

1. It doesnt matter.

2. Never mind

3. Thats OK

4. its all right

例句：

1. 价格没关系。

It doesn't matter about the price.

2. 如果我赶不上火车，那也没关系。

It doesn't matter if I miss my train.

3. 没关系。有什么事？

It doesn't matter. What's up?

4. 这鞋刚穿时要是有点紧没关系, 这种皮子很有延展性.

Don't worry if the shoes seem a bit tight at first; the leather has plenty of give in it.