You will fail unless you bestir yourself.

你必须努力，否则就要失败。

Young people of the whole country, bestir yourselves!

全国青年们，努力啊！

You must bestir yourself to take the necessary action.

你必须自我振作去采取必要的行动。

Bestir each other, we decided to writ Englis blog for improve our Englis.

为了激励彼此，我们决定通过写中英文博客的形式，提高英语水平。

Even the lethargic mother would so far bestir herself on such an occasion.

就连那位懒懒散散的母亲在这样一个时刻也振作起来了。