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What led one ichthyosaur to bite another on the snout is unknown.

是什么驱使一只鱼龙咬另一个鱼龙的鼻口部仍未可知。

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Pigs dig earth with the snout.

猪用嘴拱地。

《新英汉大辞典》

The head of a string of pigs appeared, snout-up, over the ditch, and he had to screech to a stop and watch the rear of the last pig disappear shaking into the ditch on the other side.

这时候出现了一群猪，仰着鼻子走过水渠，他只好用一个急刹车,目送着最后一只猪大摇大摆地跨过水沟,消失在另一端。

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He estimated it might have measured about 12.3m (41ft) from the snout to the tip of the tail.

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The team says the species' snout, shoulder girdle and pelvis have features one would expect to see in an animal that dug into the ground.

BBC: NEWS | Science/Nature | Dinosaur den diggers discovered