fan out
phrasal verbfan out | fan something out
- to spread out or spread something out over an area
（使）展开，散开，成扇形散开 - The police fanned out to surround the house.
警察散开包围了这座房子。 - The bird fanned out its tail feathers.
这只鸟把尾羽展成扇形。
- The police fanned out to surround the house.