Either way, one sign of dark matter particles, researchers think, is a burst of annihilation-induced gamma rays.

科学家们认为，无论是这两种解释的哪一种，暗物质颗粒的一种标志是粒子湮没爆发出的伽马射线。

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First, you have to recognize the number one warning sign: the feeling that you absolutely must get your partner to see it your way.

首先，你必须识别出第一个警告信号：那种绝对、必须让你的伴侣看到你的方式的感觉。

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ENN executives have talked to the US department of energy about joint research, a sign that the transfer of low-carbon technologies is no longer a one-way street from west to east.

新奥集团的高层已与美国能源部洽谈过有关联合研究的事宜，这表明，低碳技术的转让已不再是一种由西渐东的单向交流。

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One sign of hope is a new way to make the natural defenses of mosquitoes resistant to the Plasmodium parasite.

VOA: special.2010.04.20

And there was at least one sign along the way which at least showed that to some extent Kramer is becoming a more familiar to Londoners.

BBC: Kramer plays the name game

This is because carbon emissions are only one sign of the inefficient way in which natural resources are being used.

BBC: Time to leave the comfort zone

Still, one way or another this is yet another sign that the mobile wars are heating up.

FORBES: Samsung Passes Apple in Smartphone Shipments According to New Report