Sometimes a market trader would put a cat in his bag and pretend it was a pig to fool the customer! So if someone lets the cat out of the bag, the secret would be open to us.

有时一个市场商人会把一只猫放在他的包里，假装它是一只猪来愚弄顾客！所以如果有人让猫从包里出来，秘密就会为我们所知。

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A lioness lets out a mighty yawn to shake away the sleep and be ready for the wildebeests which were headed in the direction of the pride.

一头母狮打了一个有力的哈欠，它的睡眠被催醒了，准备面对着骄傲地朝着它方向的角马。

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That lets you work out how contagious a patient is and which drugs might be useful for treatment.

这样你就可知道患者是如何感染的，以及哪些药物可起到治疗作用。

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"Whoever lets the genie out of the bottle now may not be able to put it back inside, " he said.

WSJ: Cameron's Plans Bring Fears, Schadenfreude

Building a transistor that sticks out of its parental chip lets many of its component atoms be deployed more usefully particularly those that constitute the channel and the gate.

ECONOMIST: Transistors

Most HitClips products are scheduled to be available this summer -- with any luck, after school lets out.

CNN: Technology - Coming soon: A micro boombox