这种技术很有前途，不过尚需更多研究以确定其功效。

This is a promising technique that needs more research to determine its efficacy.

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精巧的设计保证光线可以从LED中轻松释出，从而改进其功效。

And design tweaks have improved efficiency by ensuring that light can escape from LEDs easily.

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因此，如果你想在昏昏欲睡的午后焕发活力，到公园散散步吧，其功效不亚于一次休假呢！

So when you're looking for that late-afternoon energy boost, try a walk in the park. Think of it as a 'leaf' of absence.

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