I try to buy myself something now and then.

有时候我试着给自己买点东西。

We probably still need to refuel now and then.

我们可能需要时不时地补充营养。

A:How's your school life?

学校生活怎么样?

B:Not too good, actually.

不太好实际上。

A:Why? Coz you can't go home often?

为什么?因为你不能经常回家了吗?

B:Yeah, I can only call my parents now and then.

是的，我只能偶尔打给我父母。