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Scratch and scratch - until there's no skin left.
搔吧，搔吧，直到一块好皮肤也不剩。
youdao
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Scratch my back and I'll scratch yours.
你给我捶背，我替你搔痒。
youdao
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You scratch my back, and I'll scratch yours.
你帮我，我也帮你你帮我。
youdao
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You scratch my back, and I'll scratch yours.
你帮我，我也帮你你帮我。
youdao