/swɔ:m; swɔrm/
n
1 large number of insects, birds, etc moving around together, esp bees following a queen bee （昆虫、鸟类等移动中的）大群; （尤指跟随一蜂王的）蜂群
*a swarm of ants, starlings, locusts, etc 一大群蚂蚁、椋鸟、蝗虫等.
2 (often pl 常作复数) (unpleasantly) large number of people; crowd （令人反感的）大群人; 人群
*swarms of children in the park 公园里一帮一伙的儿童.

v
1 [I] (of bees) move around in a swarm, esp following a queen bee （指蜜蜂）成群飞行（尤指随一蜂王）.
2 (a) [Ipr, Ip] move in large numbers (in the specified direction) 大群地（朝某方向）移动
*The guests swarmed round the tables where the food was set out. 客人聚集到摆好饭菜的餐桌周围.
* The crowd was swarming out through the gates. 人群一窝蜂地从出口涌出.
(b) [I] be present in (unpleasantly) large numbers 聚集（而拥挤不堪）
*crowds swarming in the streets 街上拥挤不堪的人群.
3 (phr v) swarm with sb/sth (of a place) be (unpleasantly) crowded with or full of (people or things) （指地方）挤满或到处是（人或物）
*The beach was swarming with bathers. 海滩上挤满了游泳的人.
* The stables swarmed with flies. 马厩里到处都是苍蝇.

/swɔ:m; swɔrm/
v (phr v) swarm down/up sth climb down/up sth by holding on with the hands and feet 用手和脚附着某物往下[上]爬; 爬下[上]某物
*swarm down a rope, up a tree 缘绳而下、爬上树.