snap check meaning in English

抽查检验
突击检查

They carry out a snap check or a snap inspection the expense account
他们对费用户口进行了突然的审查。
Police arrested four men aged between 17 to 21 during a snap check in sha tau kok early this ( february 17 ) morning
警方今日凌晨（二月十七日）在沙头角进行截查车辆时拘捕四名年龄十七至二十一岁男子。
Police today ( february 18 ) charged four men aged 17 to 21 with three counts of robbery . they were found on board a taxi in a snap check in sha tau kok at about 1 . 30 am yesterday ( february 17 ) during which two knives , a pistol - like - object , a crossbow and eight arrows were seized
警方昨日（二月十七日）凌晨一时三十分在沙头角进行截查车辆时，在一辆的士上发现该四人，并搜获两柄利刀、一支类似手枪物体、一把弩和八支箭。