the action of causing something to be no longer active or effective

The deactivation of warheads will be extended one year from the deadline. 使弹头失效的期限将从截止日期再延后一年。

In order to avoid the deactivation of your account, you will have to confirm your e-mail address. 为了避免你的账户被停用，你必须确认你的电子邮件地址。