(noun.) a serve that strikes the net before falling into the receiver's court; the ball must be served again.
(verb.) leave unchanged; 'let it be'.
(verb.) actively cause something to happen; 'I let it be known that I was not interested'.
(verb.) make it possible through a specific action or lack of action for something to happen; 'This permits the water to rush in'; 'This sealed door won't allow the water come into the basement'; 'This will permit the rain to run off'.
校对:赛克
达米安校对