1.
embark on a risky, doubtful, etc venture
从事一项冒险的、 成败未卜的...企业项目
2.
Even now, when he was on the brink of an adventure which should make or mar him, he was up an hour after midnight to squeeze poor neighbours.
即使在这成败未卜的当儿，他也要在深更半夜去勒索可怜的老百姓。
3.
It was the end of May when the farmer determined to be no longer repulsed by trivialities or distracted by suspense.
现在是五月末，这位农场主决心不再为琐屑小事而退缩，也不再因为成败未卜而踌躇不定了。
4.
The success or failure of the plan was Balanced on a knife-edge.
计划的成败尚未定局。
5.
The project is on a knife-edge between success and failure.
这项工程成败未定。
6.
The uncertain fate of evidentiary transplants: anglo-american and continental;
成败难卜的证据法移植:以两大法系为例
7.
My whole future was at stake.
我的未来吉凶未卜。
8.
On the View of History of Zuo Zhuan--Concurrently on the Nature of the Divine Dreams and Sorcery and Evaluation of a Man by His Success or Failure;
论《左传》的历史观——兼论《左传》神梦巫卜及以成败论人的本质
9.
And now he himself was in danger of being swallowed up-just when he was already in the middle of three decisive battles, too.
而现在，却发见自己也有被吞并的危险，而且正当他自己夹在三条火线的围攻中尚未卜胜败。
10.
Scoop Jackson of Washington ran and failed, but was still hoping when he died the other day.
华盛顿州的参议员“斯吉卜-杰克逊”竞选败北，但一直到前几天他逝世时还未忘情此事。
11.
I sensed that everything hung in the balance
我意识到一切都还成败未定。
12.
Successful or failing, we should always feel hopeful about the future.
不管成败，我们对未来都应该充满希望。
13.
"You're wasting your time, Chung-wei!" said Chu Yin-chiu gloomily, dousing Chou Chung-wei's hopes once more. "I don't need a crystal ball to tell you that you won't cut any ice with Wu Sun-fu, and that you'll come away with a flea in your ear!"
“何苦呢，仲翁！ 我未卜先知，你这一去，事情不成功，反倒受了一肚子的气
14.
He claimed that he could divine the future.
他声称能预卜未来。
15.
The fate of the bill hung in balance.
议案的命运吉凶未卜。
16.
So far, my husband has not been rescued.
现在我的丈夫生死未卜。
17.
The upshot was neither an unmitigated success nor an unmitigated failure.
这一结果既非完全的成功也未彻底的失败。
18.
Save not completed. File rename failed. Retry?
保存操作未完成。文件重命名操作失败。是否重试?