Keep smiles on your face, because life smiles to you.

脸上要保持微笑，因为生活向你微笑。

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We should fight for what we want because life is under no obligation to give us what we expect.

我们需要为自己想要的事物而奋斗，因为生活并没有义务要给予我们所期待的东西。

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But that's okay, because life is about growth.

但是没关系，因为生活就是在成长。

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Life expectancy rates climbed, because doctors and scientists developed effective ways to prevent or treat diseases such as tuberculosis, typhoid,diphtheria,and influenza.

VOA: special.2010.12.02

If you're a fan of the neutral container theory, you won't have anything extra to add, because life per se is just a zero.

如果你是中性容器理论的粉丝，你就没有任何额外的东西可添加，因为生活本身等于零。

耶鲁公开课 - 死亡课程节选

because they think that it's, you know, taking of a life in order to further scientific research.

因为他们认为这是为了科学研究而夺取了一条生命。

关于干细胞的研究 - SpeakingMax英语口语达人

Because life is dynamic, a risk assessment cannot be static, it too must be dynamic.

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And in that way, he prepared them -- because life will throw some things at you.

WHITEHOUSE: President Obama Gives Commencement Address at Booker T. Washington High School | The White House

You also need to raise the retirement age, because life expectancy has gone much higher.

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