名词
中文翻译：轴
同义词：
['pivot', 'axis of rotation']
例句：
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1. The car's engine is located at the front axle.
汽车的引擎位于前轴。
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2. The ship's propeller is mounted on its longitudinal axis.
船的螺旋桨安装在纵轴上。
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3. The new design has a more symmetrical axis of symmetry.
新设计具有更对称的对称轴。