昆虫在迁移或交配时所发生的成群飞舞的现象。如黄昏时蚊的飞舞，春季白蚁的大批飞出。 又如蜜蜂的多数工蜂随着母蜂自巢中成群飞出，特称为分蜂。
看罢，暮色已经笼罩海岸，苍茫里海鸟已群飞归巢。
Lo, the evening has come down upon the shore and in the fading light the seabirds come flying to their nests.
位于榜首的周群飞，45岁，制造触摸屏的蓝思科技创始人。
Zhou Qunfei, 45, founder of touchscreen maker Lens Technology, tops the list.
极少数的情形下，这种闪光可伴随著一群飞蚊及部分视野缺损出现。
A very small number of cases, this may be accompanied by a group of flash-bucks and some vision defect there.
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