a pattern on the body of an animal

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。

a mark that makes it possible to recognize something

The army said the relief flight would be too dangerous as none of its helicopters had Red Cross markings. 军方说由于没有一架直升机带有红十字标识，所以救援飞行太危险。

the activity of checking, correcting, and giving a mark to students' written work

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。

the action of staying close to an opposing player in order to stop them from playing the ball

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。