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1. The engineer designed a new standard gear ratio for the car to improve efficiency.
这位工程师为汽车设计了一个新的标准齿轮比率，以提高效率。
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2. The team worked on improving the standard gear ratio of their machine, which significantly increased its productivity.
团队致力于改进机器的标准齿轮比率，这显著提高了其生产力。
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3. The new standard gear ratio will be implemented in all new cars to ensure smoother drivingexperience.
新的标准齿轮比率将被应用于所有新车中，以确保更顺畅的驾驶体验。