Greenish Yellow: low threat, Not attacking you.

黄绿色：低仇恨，不会攻击你。

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The threat of a terrorist attack is rated as low.

恐怖袭击的威胁被列为低级别。

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There are just two hydrogen atoms per cubic centimeter on average in space, which poses no threat to spaceships traveling at low speeds.

太空中平均每立方厘米只有两个氢原子，这对低速飞行的宇宙飞船不构成威胁。

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But Professor Gaechter says his team's theory was that punishment has only low costs because it needs to be used rarely and works as a threat.

VOA: special.2009.03.03

The current eight-year-old system runs from green, signifying a low threat, to red, meaning severe.

BBC: US may scrap colour-coded terror alerts

McAfee added on its blog that the fake Android movie player was a low-risk threat, given that users have to actively download the application to infect themselves.

FORBES: Pay-Per-Text Malware Hits Android Phones

Based on my conversations with European carriers, I believe that the low-end threat from the Chinese and the sudden interest in Lumia 800 are the two biggest factors here.

FORBES: The New HTC Warning is Massive