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back horse

美英

un.底板突出部分
网络害群之马

back horse

back horse

英-汉网络释义

back horse

害群之马

留下印迹_新浪博客 ... 聪明绝顶 as wise as Solomon 害群之马 back horse 害怕，犹豫 have cold feet ...

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Kinematics and dynamics analysis about double horse head pumping unit with arc back horse head

后驴头为圆弧的双驴头抽油机运动与动力分析

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