look up 事情有好转；查阅

look over 大致看一下

look through 细细浏览

look in on 没事顺便留意一下、注意一下

look out for somebody 留意一下

Things are looking up.

事情变得好转。

I’ll give it to my friend to look over the essay.

我要给我朋友扫一眼我的论文。

My mom asks my grandma to look in on her fish and plants.

我妈妈要外婆留意一下她养的鱼和植物。

I want you to look out for him or her，in case you see her but I don’t.

帮我留意一下我朋友，以防你看到她了，我没有看到。