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1.The lever shaft is crucial for the operation of the machine.
杠杆轴对于机器的运作至关重要。
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2.The engineer carefully adjusted the lever shaft to ensure smooth movement.
工程师仔细调整了杠杆轴，以确保运动的顺畅。
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3. The lever shaft was damaged during the accident, which caused the machine to stop working.
事故发生时，杠杆轴受损，导致机器停止工作。