marking

I couldn't go out with the others because I had a pile of marking to do.

我没法和其他人一起出去，因为我有一堆作业要批改。

There are a couple of fish with blue markings, and a few more with gold stripes down the side.

这有几条带蓝色斑点的鱼，那边还有几条带金色条纹的。

Effective marking is often the key to a team's success.

有效的盯人通常是一只球队成功的原因。