I smote seven at one blow.

我一下子打死了七个。

Seven at one blow is my kind of affair.

一下打死七个就是我的作风。

Do you think that could be anything to a man who has struck down seven at one blow?

你认为一口气打死七个的人会抓不住一根小树枝吗？

He killed three flies at one blow.

他一下子打死了三只苍蝇。

The tale of disaster was not finished at one blow.

灾难不是到此结束了。