Do you have to replace something that becomes worn out or depleted or that can be lost or stolen?

你能够更换某些东西，当它磨损或耗尽或丢失或被盗？

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So why not replace it with something cheap and plentiful that has no practical value anyplace else?

那么，为什么不能用既便宜又丰富，而且在其他领域还不怎么值钱的东西来代替呢？

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Replace it with something that can grow your image and increase revenue.

取而代之做一些能够提升公司形象和收入的工作。

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And then we'll talk about how you can build something to replace a complicated small part in the body like that.

然后我们再讨论工程师们如何构建,能够取代体内如此精细小巧器官的东西

耶鲁公开课 - 生物医学工程探索课程节选

Dialysis - and this is a method to replace or augment the function of your kidneys, to remove waste products really from the blood, which is something the kidney does continuously.

透析技术,这种技术用来替代,或者增强肾脏功能,以去除血液中的各种废物,就像肾脏持续进行的那样

耶鲁公开课 - 生物医学工程探索课程节选

So, what they do is what's called, "Systematic desensitization," which is they expose you to what causes you the fear but they relax you at the same time so you replace the aversive classical conditioned fear with something more positive.

治疗的方法叫做“系统脱敏疗法“,也就是将你暴露在引起恐惧的情境下,但同时让你放松,所以你用更加积极的感觉,替换了经典条件作用造成的厌恶性恐惧。

耶鲁公开课 - 心理学导论课程节选

So with Drive, Google has their first chance to come in without necessarily needing to replace something else.

FORBES: Google Drive Could Be Huge

If people start eating small amounts of chocolate, it should replace something else, preferably other high-calorie sweets or snacks.

CNN: Daily chocolate may keep the heart doctor away

Now, say you only want to replace something on a specific line.

ENGADGET: VIM 101: a quick-and-dirty guide to our favorite free file editor