名詞 clustering:

1. a grouping of a number of similar things
   同義詞：bunch, clump, cluster

動詞 cluster:

1. come together as in a cluster or flock
   同義詞：cluster, constellate, flock, clump
2. gather or cause to gather into a cluster
   同義詞：bunch, bunch up, bundle, cluster, clump

1. The men clustered together round the fire and sang songs.
   人們聚集在篝火周圍唱歌。
2. You can see stars in clusters in the night sky.
   你可以看到夜空中的星群。