It would be unreasonable to expect somebody to come at such short notice.

要求人家随传随到，太不近人情了吧。

《牛津词典》

Pencil in those random appointments that come up on short notice, and can be cancelled at short notice!

用铅笔记下那些随机出现的约会——这些约会可以随时执行，也可以随时取消。

youdao

In addition, the Task Force will help mobilize teams that can respond to requests for technical assistance from countries, and be deployed at short notice to XDR-TB risk areas.

此外，专题小组将帮助组织工作队，对国家的技术援助要求作出反应并能在短时间内派往极端耐药结核的风险地区。

youdao

As a solid-fuel rocket, this could be fired at short notice from mobile launchers.

ECONOMIST: Nuclear proliferation

Widespread procurement activity has been observed abroad and production of biological weapons could be resumed at short notice.

BBC: Iraq 'could build N-bomb'

It is solid-fuelled, meaning it can be fired at short notice, and can reportedly deliver several warheads to various targets.

ECONOMIST: Asian missiles