cluster /ˈklʌstə/ CET6 TEM4 ( clustering, clustered, clusters )

• 1. 

  N-COUNT A cluster of people or things is a small group of them close together. (人或物的) 群

  例：

  ...clusters of men in formal clothes.

  …几组身着正装的男人。

• 2. 

  V-I If people cluster together, they gather together in a small group. (人) 结成群

  例：

  The passengers clustered together in small groups.

  乘客们聚集成小群体。