Prices may be altered without notice.

价格变动不另行通知。

He was fired without notice.

他没得到预先通知就被解雇了。

He was dismissed without notice.

他未得到预先通知就被辞退了。

Our offer may change without notice.

我方报价如有变动不另通知。

The teacher gave the test without notice.

那老师未事先通知便举行测验。