In the main loop, you turn the LED on with the line.

在主要循环中，利用下面这行代码打开LED。

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A gallium nitride LED on sapphire has a typical internal quantum efficiency of around 70%.

基于蓝宝石的氮化镓发光二极管的一般内量子效率约为70%。

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So someone who wants to become, say, head of software engineering at a large company in ten years’ time can see what sort of jobs have led on to such roles for others.

因此比如说有人想在十年里成为一家大企业的软件工程主管，那么他就可以从LinkedIn得知其他人是先从事哪些工作然后再达到这一地位的。

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The rallies,led by workers from the textile and electronics industries, called on the government to provide more welfare to the unemployed workers and support industries hit by the downturn.

VOA: standard.2009.03.09

And the idea was that gravity did work on the water and falling, and that work led to the generation of heat.

焦耳的想法是,重力对水，做了功。

麻省理工公开课 - 热力学与动力学课程节选

It isn't the Red Sea. That's a mistranslation that occurred very very early on, so it's led to the notion that they were at the Gulf of Aqaba or somewhere near the actual big ocean water.

并不是红海，这个错误的翻译很早以前就存在了,让人们以为是在亚喀巴湾,或者是接近真正意义的大洋的什么地方。

耶鲁公开课 - 旧约导论课程节选

Shane Lowry (71) is four under and Colm Moriarty (72) one over while Louis Oosthuizen led on 15 under.

BBC: Rory McIlroy fires 69 in the Open at St Andrews

Cisco Systems, up 1.1%, led on the positive side, while JPMorgan Chase, down 2.2%, brought up the rear.

FORBES: Market Turns Defensive As Investors Wait On Bernanke, Draghi

Rodriguez, who suffers from glaucoma, was led on and off the stage.

WSJ: 'Sugar Man' Rodriguez plays to adoring NY crowd