unsubscribe
verb [ I or T ] uk/ˌʌn.səbˈskraɪb/ us/ˌʌn.səbˈskraɪb/
取消订阅（以不再收到相应的电子邮件或信息）;注销（某人的订阅者身分）
to get an organization or business to remove your name from its mailing list so that you no longer receive email or post from them, or to remove someone's name from such a list