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Different substrate and concentration from Portunus trituberculatus will affect digestive enzyme activity.

不同的三疣梭子蟹的底物和浓度会影响消化酶活力。

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Any activity that requires too much concentration, such as reading a novel or a long article, demands your focus, so you slow down physically.

任何活动都需要很专心，比如阅读一篇小说或者一篇很长的文章，需要你的聚焦，所以你自然地放慢了。

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The third major change is the concentration of activity in Washington, D.

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Physical activity encourages better concentration.

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Regular physical activity enhances important skills, like concentration and problem solving, which have been shown to improve academic performance.

WHITEHOUSE: The White House