swarm
noun uk/swɔːm/ us/swɔːrm/
[ C ]（一起移动的）一大群（昆虫）
a large group of insects all moving together
a swarm of bees/wasps/ants/locusts 一大群蜜蜂／黄蜂／蚂蚁／蝗虫
The dead sheep was covered with swarms of flies. 这只死羊身上爬满了一群群的苍蝇。
[ C, + sing/pl verb ]（蜂拥的）一大群（人）
a large group of people all moving together
A swarm of/Swarms of photographers followed the star's car. 成群结队的记者跟在这位电影明星的车后。
swarm
verb [ I ] uk/swɔːm/ us/swɔːrm/
（昆虫）群集，成群结队地移动
When insects swarm, they come together in a large group.
（人）蜂拥，涌动
When people swarm somewhere, they move there in a large group or in large numbers.
During the summer, tourists swarm the little beachside town. 游客在夏季纷纷涌向这个海滨小镇。
Phrasal verb
swarm with something 挤满，充满，云集
If a place is swarming with people or things, there are large numbers of them moving around it.
The garden is swarming with wasps. 花园里到处都是黄蜂。
Something must be going on - the streets are swarming with police. 肯定发生了什么事情——街上到处是警察。