effective_date_of_change_有道手机词典

1.Such changes shall be announced in writing to the other party two (2) weeks prior to the effective date of the change.
此项变更应在变更生效之日起两（2）周前以书面形式通知对方。
dict.yoduao.com
2.Below is a list of locales that have been issued an entirely new area code, with the effective date of the change.
下面是关于区号改变的列表。除非地址在早前的表格中，所有新区号将在指定日期被实施。
dict.yoduao.com