the date on which a law or rule comes into use 生效日期◆The effective date of the court order has been delayed for two weeks. 法院判令的生效日期被推迟了两个星期。
a date chosen in a legal contract for when sth will happen or when sth must be done 有效日期◆These changes to your policy apply from the effective date shown below. 保单上的这些变更自以下所示日期起生效。