He's said to be uncertain about his future.
据说他对他的前途没有把握。
Other people might be uncertain about trying something new.
其他人可能会茫然尝试一些新的东西。
Even if success is uncertain and hard to quantify, you can be certain about failure.
虽然成功具有不确定性，很难量化，但你却能够确定失败。
Even if success is uncertain and hard to quantify, you can be certain about failure.
虽然成功具有不确定性，很难量化，但你却能够确定失败。
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