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1.The pitman arm is a crucial part of the machine's design.
皮特曼臂是机器设计中至关重要的部分。
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2.The engineer used the pitman arm to adjust the machine's settings.
工程师使用皮特曼臂来调整机器的设置。
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3.The pitman arm was designed to simplify the machine's operation.
皮特曼臂的设计是为了简化机器的操作。