名词
中文翻译：可变速轴
同义词：
['variable speed shaft', "variable speed shaft assembly例句：1. The car has a variable-speed shaft that allows for easy acceleration and deceleration.（这辆车有一个可变速轴，可以轻松加速和减速。）2. The engineer installed a variable-speed shaft in the machine to improve its efficiency.（工程师在机器中安装了可变速轴以提高效率。）3. The driver used the variable-speed shaft to control the vehicle's speed without affecting the engine's performance.（驾驶员使用可变速轴来控制车辆的速度，而不影响发动机的性能。）"]
例句：
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1. The car has a variable-speed shaft that allows for easy acceleration and deceleration.
这辆车有一个可变速轴，可以轻松加速和减速。
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2. The engineer installed a variable-speed shaft in the machine to improve its efficiency.
工程师在机器中安装了可变速轴以提高效率。
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3. The driver used the variable-speed shaft to control the vehicle's speed without affecting the engine's performance.
驾驶员使用可变速轴来控制车辆的速度，而不影响发动机的性能。