名词
中文翻译：群集
同义词：
['group', 'gather', 'aggregation']
例句：
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1. Thebirds are clustered in the treetops.
鸟儿们在树梢上聚集。
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2. Thescientists gathered at the conference to discuss theirfindings.
科学家们在会议上聚集，讨论他们的发现。
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3. The studentsare clustered around the teacherfor help.
学生们围绕着老师寻求帮助。