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momentum

英 [mə'mentəm] 美[mo'mɛntəm]
英英释义 考试真题 实用场景例句
  • n. 势头；[物] 动量；动力；冲力

英英释意

1. an impelling force or strength;
"the car's momentum carried it off the road"
2. the product of a body's mass and its velocity;
"the momentum of the particles was deduced from meteoritic velocities"