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1.The hand oil pump is used to dispense oil from a handheld device.
手油泵用于从手持设备中抽取油。
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2.The hand oil pump was designed for convenience and ease of use.
手油泵设计用于便利性和易用性。
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3. The hand oil pump is essential for maintaining the proper functioning of machinery.
手油泵对于保持机械设备的正常运作至关重要。