proof of work

but dad iulian said: 'critics say that the boys won't grow properly, but there's no proof of that. hard work and exercise are always good.'

不过尤利安辩称：“人们批评说锻炼会影响孩子的正常发育，但是没有证据显示有这种伤害。努力健身和健康锻炼总是有益无害的。”

On the Expression and the Proof of Virtual Work Principle for Deformable Body

关于变形体虚力原理的表述及证明

the awards can go to much younger researchers than typically receive the nobel prize, as experimental proof of theoretical work is not required.

这个奖项可以颁给更年轻的研究人员相比通常获诺贝尔奖来说，因为理论工作的实验证明不是必须的。

document your accomplishments so that when it comes time for annual reviews, you have proof of your hard work and leadership experience ( or potential).

记录下你的业绩，在年末评估时就能证明你努力工作并具有领导经验（或潜力）。