你不确定自己能够处理个人问题或者变化的几率有多高？

How often have you felt unsure of your ability to handle personal problems or deal with change?

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当然因为有赤字问题，国会交易和其他不确定性事件的制约，两人都不可能明确承诺什么。

Of course, neither will deliver precisely what he promises thanks to the constraints of deficits, congressional horse-trading and the flow of unexpected events.

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尽管研究人员不确定这一情况对人的总体生理健康有何影响，但是每天皮质醇曲线异常可能是个问题，贝迪特说。

While the researchers aren't sure what this could mean in terms of overall physical health, it's thought that any abnormalities in daily cortisol patterns could be problematic, Birditt said.

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