examine (something) in order to determine its accuracy, quality, or condition, or to detect the presence of something.
customs officers have the right to check all luggage
同义词：
examineinspectlook atlook overscrutinizescansurveystudyinvestigateresearchprobedissectexplorelook intoinquire intogo intogo over with a fine-tooth combcheck outtestmonitorreviewinformal：give something a/the once-overgive something a look-seegive something a going-over
2
stop or slow down the progress of (something undesirable).
efforts were made to check the disease
同义词：
haltstoparrestbring to a standstillcut shortbarobstructhamperimpedeinhibitfrustratefoilthwartstand in the way ofpreventcurbblockstallhold upinterfere withretarddelayslow downbrakeput a brake onstemstauncharchaic：stay
3
mark or click on (a box) in order to select a particular option on a form, questionnaire, etc.
users who want privacy should check the box that prevents your files from being shared
4
Chess
move a piece or pawn so that (the opposing king) is under attack.
he moves his knight to check my king again
5
(in poker) choose not to make a bet when called upon, allowing the action to move to another player.
6
(of a hound) pause to make sure of or regain a scent.
