You will fail unless you bestir yourself.是什么意思？

You will fail unless you bestir yourself.

你必须努力,否则就要失败.

you

pron. 你，你们，您们，各位，大家；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

will

n. 愿意，意志（力），[法]遗嘱；vt. 决心要，将（财产等）遗赠某人，用意志力驱使（某事发生）；vi. 愿意， 希望， 想要；

例句
He will be keeping abreast of the news...
他将时刻关注最新消息。

fail

vt.& vi. 失败，不及格，倒闭，破产，缺乏，衰退；vi. 衰退，失败，不及格，破产，不足；vt. 不及格，使失望，忘记，舍弃；n. 失败，失误，不及格，不及格者，[商]期货交割失期；

例句
...absent fathers who fail to pay towards the costs of looking after their children.
那些不在子女身边、未能支付抚养费的父亲

unless

conj. 除非，如果不；prep. 除了，…除外；

例句
No-one can set up a waste disposal company unless they can show that they've got enough money and trained staff to do the job properly...
任何人若想成立废品处理公司,必须证明其拥有足够资金和受训员工以保证工作可以顺利开展。

bestir

vt. 激励，使忙

例句
When they were quite out of sight, Phineas began to bestir himself.
等他们走得无影无踪之后, 斐尼亚斯便开始行动起来.

yourself

pron. 你自己，（用以加强语气）亲自，你的正常或健康的情况；

例句
You grew up in an agnostic household and have never been able to bring yourself to believe in God.
你在一个信奉不可知论的家庭里长大，一直都无法信仰上帝。