without notice

基本解释

All statements regarding IBM future direction or intent are subject to change or withdrawal without notice and represent goals and objectives only.
关于 IBM 未来发展方向或者意图的所有声明，都有可能在不通知及告示目标与目的的情况下进行更改或者取消。
You need to consider all options equally and check back frequently with the search engines because the algorithm is often subject to change without notice.
您需要同等地考虑所有选项并经常使用搜索引擎进行核查，因为算法常常会在不另行通知的情况下更改。
Buffett also takes friendly positions from time to time in America’s blue chip companies and sells them without notice when he believes he has either made or lost enough money.
巴菲特也在美国蓝心公司友好的不时的担任职位，并在他认为取得或损失足够的资金时不通知就出卖所有股份。

Baek points out that Pyongyang has released water into the South without warning before, despite promises to provide notice.
So even without there being an Attorney General, somebody might be awake in the justice department and notice that that's actually illegal.
就算是司法部长不知情,司法部门也会有人会发现,这样的协议是违法的
耶鲁公开课 - 博弈论课程节选
The New Criticism, incontestably and without rival, created an atmosphere in which it was okay to notice that things were a little more difficult than they'd been supposed to be.
新批评派，无可厚非，创造了一种很好的风气，大家似乎都能欣然接受,那些看起来还比较复杂的东西。
耶鲁公开课 - 文学理论导论课程节选

Lenovo reserves the right to alter product offerings and specifications at any time without notice.
ENGADGET: Lenovo IdeaCentre A600 All-in-One Desktop unleashed