coalesce

1. V-I If two or more things coalesce, they come together and form a larger group or system. 合并[正式]

As the number of moisture droplets increases, they begin to coalesce into small rivulets of fluid. 当水滴数量增加，它们会汇集成细流。

His sporting and political interests coalesced admirably in his writing about climbing. 他对运动和政治的兴趣,很了不起地共同体现在他关于攀岩运动的写作中。