There is a cancer stem cell lurking out there that may be very bad.

有一个癌症干细胞潜伏在那里，可能会很糟糕。

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The short answer is that we don't know. One possibility is that antimatter is lurking out there at distant points around the cosmos. That's unlikely, though.

简单地说就是不知道。但也有一种可能是反物质潜藏在宇宙四周的遥远地方，尽管，这种情况不大可能的。

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If you look to the stars tonight, consider this: No matter how innumerable they may seem, there are far more planets than stars lurking out there in the darkness, a new study suggests.

一项新研究说：如果今晚你仰望星空，那么仔细想想，不管它们多么的数不尽数，仍然会有比它们多得多的行星潜藏在黑暗中的某个角落。

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They are also uncertain of their fates at the hands of an army that has to root out rebels lurking among them.

ECONOMIST: The war��s grim last chapter

But it turns out that there may be a hidden culprit lurking inside your MP3 player, sucking the juice out of your batteries at a faster pace than you even realized: PlaysForSure DRM.

ENGADGET: Is DRM sucking the life out of your MP3 player?

It turned out the hackers had been lurking in his system since April 15, 2009.

WSJ: Hackers New Target: Small Firms With Lax Security