The dog nosed a rat out.

那条狗嗅出一只老鼠的气味。

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An electrician peels the dead rat out of the high voltage box for the electric chair.

一个电工将死老鼠从为电椅通电的高压电箱中取了下来。

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They got the boat out, and the Rat took the sculls, paddling with caution.

他们把船划出去，水鼠拿起双桨，小心翼翼地划着。

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If you rat someone out in jail, someone puts a contract out on you.

如果你坦白了,你是在自找麻烦

耶鲁公开课 - 博弈论课程节选

They don't always rat each other out and some firms manage to collude?

为什么他们不总把对方招供出来,有些企业也能串通好呢

耶鲁公开课 - 博弈论课程节选

If they both rat each other out, they'll end up in jail for two years, But if you rat the other guy out and he doesn't rat you out, then you will go home free and he'll go to jail for five years.

要是都坦白了,两人都要坐两年牢,要是你坦白而他不坦白,你无罪释放而他坐五年牢

耶鲁公开课 - 博弈论课程节选

The Feds will try to build their case against Cohen by getting Steinberg and other hedgies to rat out the king for insider trading and securities fraud.

FORBES: The Feds Must Chase Down King Cohen

If they confess by Apr. 15, and rat out the promoters who helped them, the IRS won't recommend them for prosecution or hit them with the civil fraud penalty--equal to 75% of the evaded tax.

FORBES: Magazine Article

It supplies a ready-made black box to protect your identity, which will probably prevent the casual observer or facial recognition software from recognizing you, though your friends may still rat you out by tagging you in a photo on Facebook.

FORBES: A $12 Way To Protect Your Privacy: Paparazzi Shades