包括面向犬类、电子和物理搜寻的选项。

This would include canine, electronic, and physical search operations.

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但在犬类研究领域，很少有研究是确定的。

But in the world of dog studies, very little is definitive.

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也有犬类交易市场啦。

There are also some dog markets.

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这第一次证实了甲类流感病毒可以引起犬类疾病。

This was the first evidence of an influenza A virus causing disease in dogs.

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当我们抵达大楼入口处时，传来了门卫严厉的声音：“除导盲犬外，任何犬类不得进入大楼。”

We approach the grand entrance. "No dogs allowed in the building.

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当我们抵达大楼入口处时，传来了门卫严厉的声音：“除导盲犬外，任何犬类不得进入大楼。”

We approach the grand entrance. "No dogs allowed in the building.

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