名词
中文翻译：无定向运动
同义词：
['random motion', 'unguided movement']
例句：
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1.The robot's undirectional motion is causing confusion among the workers.
机器人的无定向运动让工人们感到困惑。
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2. The ship's undirectional motion was a result of the strong winds.
船的无定向运动是由于强风造成的。
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3. The scientists were surprised by the undirectional motion of the particles.
科学家们对粒子的无定向运动感到惊讶。