When we do the same movements with our bodies over and over again, we overuse some muscles and that overuse can lead to strain and injury.

当我们的身体一遍又一遍地做同样的动作时，会过度使用一些肌肉，从而导致劳损和受伤。

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Take from our souls the strain and stress;

卸却灵魂的紧张与重负

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Even emotional stress can lead to strain and pain.

甚至心理压力也能导致压迫和疼痛。

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"The candidates were feeling the strain and the audience felt a kind of sense of excitement that I would not have anticipated."

VOA: standard.2010.04.22

Now, you don't have to buy that and individuals undoubtedly found the strain too much from time to time, but what's interesting, is rather the ideal, the claim, the theory.

你不必非得接受这些理论,况且现代社会常充斥着个人主义倾向,但是那些理想,主张和理论却更意味深长

耶鲁公开课 - 古希腊历史简介课程节选

It was found in strain R, a particular strain of E.coli, and it was the first one found, There's a nomenclature that's evolved for this.

酶被发现于R菌株,大肠杆菌中一种特别的菌株,又是被发现的第一种内切酶,有一种专门为此制定的命名法

耶鲁公开课 - 生物医学工程探索课程节选

So far the inquiry has examined evidence surrounding the deaths of Adam Strain and Claire Roberts.

BBC: Raychel Ferguson

Even for people in top physical condition, that can cause a lot of strain and fatigue.

FORBES: DARPA Robot Carries Heavy Loads So Soldiers Don't Have To

Garza suffered a training camp lat muscle strain and has not pitched for the Cubs this season.

WSJ: Harvey improves to 5-0, leads Mets over Cubs 3-2