英文翻译.the teacher gave him a carrot andan egg to comment on their hardness...这句话怎么翻译呀.

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英文翻译.the teacher gave him a carrot andan egg to comment on their hardness...这句话怎么翻译呀.

老师给了他一根胡萝卜和一个鸡蛋让他鉴别(比较)它们的硬度.
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