clusters
[k'lʌstəz]
n.
（果实、花等的）串( cluster的名词复数 );
簇;
（人、物等的）群;
组;
v.
（使）集中( cluster的第三人称单数 );
例句:
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I'm taking over the city with tropical clusters!
来自THETIMES
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These small particles agglomerate together to form larger clusters.
这些颗粒聚结形成较大的团。
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Tombstones jutted out of the ground in broken clusters.
墓碑三三两两地竖立在地面上。
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Sometimes several clusters of white clouds drift across the blue sky.
蔚蓝色的天空中,时而飘过几朵白云.
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Warts may occur on their own or in clusters.
来自BBC
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Star clusters Stars often grow up in a group.
来自BBC