straggler
noun [ C ] uk/ˈstræɡ.lər/ us/ˈstræɡ.lɚ/
落伍者，掉队者;落在后面的人（或动物）
a person or animal that is last in a group to do something or the last to get to or leave a place
We watched the last of the stragglers come in, three hours after the first runner. 我们看到落在最后面的选手跑过来了，他整整落后第一名选手3个小时。