at a moment's notice

基本解释

For us, everything is subject to change, and we can go anywhere at a moment's notice.
對我們來說，任何事都是容易發生變化的，我們可以在收到通知後立即去任何地方。
The entire organization has to be ready to adapt to all of these changes at a moment's notice.
整個組織不得不準備好即刻適應所有的這些變更。
Seeing as paramedics have high stress jobs that require them to be on call and ready to save lives at a moment's notice, you might expect their mean annual salary to be higher.
可以看見的是，護理人員有如此高壓力的工作，要求他們隨叫隨到，竝時刻準備好立即搶救生命，你可能想象他們的工資應該會更高些。

"That was reassuring, but it also meant that if you were unidentified you had potential friendly fire not too far away at a moment's notice."
Secretary Clinton said Wednesday that Bosworth had been prepared to travel to North Korea "at a moment's notice" during his first mission to the region last week, but said he regrettably did not get an invitation to do so.

But the boat's not forgotten--it's docked right out back--so he can still take trips at a moment's notice.
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Once you open your doors, get ready for your staff to walk out through them at a moment's notice.
FORBES: Magazine Article