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单词	pitch circle
释义	pitch circle noun : a pitch line in a circular gear that forms a circle concentric with the axis of the gear Word History Etymology pitch entry 4
随便看	fig family fig faun fig leaf fig leafs fig marigold fig mite fig moth Fig Newtons fig parrot fig rust fig scale fig soap Fig Sunday fig tree fig wasp hot buttered rum hot button hot buttons hot cap hot chisel hot chocolate hot cockles hot cocoa hot comb hot commodity

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