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翻译
first law of motion
英 [fə:st lɔ: ɔv ˈməuʃən]
美 [fɚst lɔ ʌv ˈmoʃən]
释义
第一运动定律,牛顿第一定律
英英释义
Noun
1. a body remains at rest or in motion with a constant velocity unless acted upon by an external force