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填空prohibitedX-ray scannersentrancesmetal detectorsgo throughfetch填空There are security channels in each station. Security staff are placed at the ___1___ of train stations with equipment like _______2_______ and ______3_________. The passengers may have to wait in line a long time to __________ security checks. They put all the luggage on the security check apparatus and then have themselves checked by security staff. Afterwards, they should pass the channel quickly and ______ their luggage. The __________ articles will be confiscated.第二、三个空填入的单词是