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1.The car's air intake adjusting spring needs to be replaced regularly to keep the engine running smoothly.
汽车的进气门调节弹簧需要定期更换，以保持发动机平稳运行。
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2. The mechanic adjusted the air intake adjusting spring to improve the car's performance.
技师调整了进气门调节弹簧，以提高汽车的性能。
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3.The new air intake adjusting spring is designed to reduce noise and vibration, making the ride more comfortable.
新的进气门调节弹簧设计用于减少噪音和振动，使乘坐更加舒适。