About a billion years ago, simple green plants started generating oxygen, which soon became a major part of our atmosphere as well.

大概10亿年前，一些简单的绿色植物开始生成氧气，后来就逐渐变成我们现在大气层的一个主要部分。

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The design is based around simple green concepts. Senior botany curator, Frank Almeda, explains.

设计采用了简单的环保概念，资深植物学馆长法兰克·阿尔米达说明。

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So these are stunning numbers for something as simple as eating mushrooms and drinking green tea."

VOA: standard.2010.02.23

The primary function is to offer directions using the GPS. The LEDs tell you which way to head with simple green arrow animations and alert you to upcoming turns by flashing a red exclamation point.

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The attack was simple, said Jon Green, head of product marketing at Aruba Networks, which provided the network security at the conference.

FORBES: Magazine Article

The attack was simple, said Jon Green, head of product marketing at Aruba Networks (nasdaq: ARUN - news - people ), which provided the network security at the conference.

FORBES: Hacking The Security Experts