问题描述：
英语翻译
The renowned naturalist E.L.Wallace,after thoroughly examining the carcass,concluded that it was a plesiosaur which had been preserved in glacial ice that had melted and moved south.With no teeth and a bill,Wallace reasoned,the animal must have lived on vegetation in a swamp.
The renowned naturalist E.L.Wallace,after thoroughly examining the carcass,concluded that it was a plesiosaur which had been preserved in glacial ice that had melted and moved south.With no teeth and a bill,Wallace reasoned,the animal must have lived on vegetation in a swamp.
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