Dudley's best friend is Piers Polkiss, a scawny boy with a face like a rat.

达力最好的朋友是皮尔波奇斯。 他是个有一张老鼠一般的脸，瘦骨嶙峋的男孩，。

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Methods: These drugs were separately applied onto the surface of the medulla, causing the rat to scratch the ipsilateral face with hindlimb.

方法：在大鼠脊髓表面使用此两种药物，引发后肢搔抓运动。

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With a smile of much happiness on his face, and something of a listening look still lingering there, the weary Rat was fast asleep.

他看到，河鼠睑上带着快乐的微笑。还挂着一丝侧耳倾听的神情，困倦的河鼠沉沉睡熟了。

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