What we buy may make life more efficient or interesting, but we give something up, too.

我们购买某件工具，或许会使生活更有效率或更有趣味，但同时我们也会为此放弃一些东西。

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Even though we seem to have lots of gadgets that are meant to make us more efficient with our time, the gadgets all draw our attention and life seems to speed up.

尽管我们好像拥有很多让我们更高效管理时间的工具，这些工具却都在占用我们的时间，而生活也越来越加快节奏。

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You might have thought that VW was one of the greenest car companies out there, but did you know they only stepped up to make their cars more efficient when they were forced to do so?

你或许曾经认为大众是世界上最绿色的汽车公司，但你知道吗？他们只是在被迫之下才迈出制造更有能效汽车的脚步的？

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And all these companies start coming up with new technologies that make your cars more fuel-efficient.

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But a London technology start-up called Believe.in says it has a plan to make the whole process even more efficient.

BBC: Believe.in and the business of charity