that is legally or officially acceptable有效的；正当的◆a valid passport有效护照◆They have a valid claim for compensation.他们的赔偿要求正当合理。◆The ticket is valid for three months.这张票有效期为三个月。 () that is accepted by the system有效的；被接受的◆a valid password有效密码OPPinvalid ▸ˈvalidly