someone who stays in a place, job, etc.

The longest stayers are the British, who visit Australia to see friends and relatives. 逗留时间最长的是来澳大利亚看望亲朋好友的英国人。

a person or animal that continues to try hard rather than giving up

The horse isn't very fast but it's a stayer and always finishes even the longest races. 这匹马速度不是很快，但它耐力很好，再长的赛程也总能跑完全程。