with little warning or time for preparation
臨時通知，提前很短時間通知
tours may be cancelled at short notice.
旅行可能會臨時通知取消。
warn someone of something about or likely to occur, especially in a formal or threatening manner
正式警告（某人某事將會或可能發(fā)生）；正告
we're going to put foreign governments on notice that we want a change of trade policy.
我們將要警告外國政府我們要改變貿(mào)易政策。
pay no attention to someone or something
不注意
pay attention; show signs of interest
注意；有興趣