to spread over a wide area.
The police fanned out across the park.
Etymology: based on the literal meaning of fan (= a device you open and wave in front of you to cool yourself)
英语词组固定搭配大全包含18674条英汉双解词组,基本涵盖了全部常用英文词组、短语的翻译及用法,是英语学习的有利工具。