The dog has a problem.

这条狗有一个难题。

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The problem of dog overpopulation is a real one.

“狗口过剩”已经成为现实中一个严峻的问题。

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"Is the problem," Ira asked, "that you don't think you can care for a dog?"

“问题就在这里，”Ira问道，“难道你不认为你能照顾一只狗吗？”

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Then when Smiley's dog come to make a grab the other dog's back legs, he saw in a minute how there was a problem.

VOA: special.2009.08.29

It's its main food source, the prairie dog, that's the problem.

NPR: Drilling to Begin in Colorado Ferret Habitat

The new BarkLimiter series helps put an end to the problem by giving dog owners control over nuisance barking.

ENGADGET: Garmin announces new dog collars, talks up 'Bark Odometer'

So it is hard to see what the problem is beyond a dog-in-the-mangerish desire not to give anything away.

ECONOMIST: Wireless broadband: Shan't! | The