熟悉情况的人

on the spot training put on the spot on the spot a man with the bark on The style is the man. the hour and the man the man behind the wheel the man in the moon the man in the street The tailor makes the man. the man at the wheel on-the-spot mediation on the spot audit on-the-spot trial on-the-spot inquiry on-the-spot experiment on-the-spot collection on-the-spot investigation delivery on the spot goods on the spot on-the-spot shoot on the spot