But when the piranhas threatened each other over food, they produced a barking sound.

但是，当它们因为争夺食物而互相恐吓的时候，就会发出一种吠叫声。

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Presented by the green wall of trees in black, the Grand Canal echoing rumble of vehicles on the road, and occasionally still hear the dog barking sound.

墙外的小树由绿色呈现黑色，大运路上的车辆隆隆响着，偶尔还能听见狗叫的声音。

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You can hear the barking of dogs and the unmistakable sound of hostile searchers nearby.

您可以听到附近的狗叫声及清晰的敌方搜寻者的声音。

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Above the factory floor, the semicircular gallery of the museum showcases the evolution of the Ducati motorcycle from the early days just after World War II, when the company introduced its first auxiliary bicycle engine (called the Cucciolo, or "puppy, " because of the distinctive barking sound it made), up through the company's first motorcycles in the 1950s and the road bikes and racing bikes that followed.

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There is no irritating barking or high-frequency sound.

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Then, she heard a crash upstairs in the hall and the sound of a dog barking.

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