At a busy U.S. airport, those mistakes could mean a thousand passengers a day who would get pulled aside by security - a move that would probably mean lots of missed flights and irate passengers, he says.

• 他说，在繁忙的美国机场，这种错误将意味着每天有1千名乘客被保安扣压，这一举动可能造成许多航班误点，并激怒乘客