spot check
noun/ˈspɒt tʃek/
/ˈspɑːt tʃek/
- a check that is made suddenly and without warning on a few things or people chosen from a group to see that everything is as it should be
抽查；抽样检查 - to carry out random spot checks on vehicles
对车辆进行随机抽检 - In a series of spot checks, police searched buses crossing the border.
警方在一系列突击检查中搜查了过境巴士。
- to carry out random spot checks on vehicles