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1. The worker used an up-and-down rod to adjust the height of the table.
工人使用一个上下杆来调整桌子的高度。
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2. The car was equipped with an up-and-down rod for easy maneuvering.
这辆车配备了一个上下杆,便于灵活操作。
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3. The engineer used an up-and-down rod to lift the heavy machine.
工程师使用一个上下杆来抬起沉重的机器。