名词
中文翻译：平面运动
同义词：
['parallel motion', 'parallel movement']
例句：
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1.The airplane's plane-parallel motion is smooth and efficient.
飞机的平面运动平稳高效。
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2. The car's parallel motion is smooth and fast.
汽车的平行运动平稳快速。
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3. The train's parallel movement is smooth and comfortable.
火车的平行运动平稳舒适。