• Well, this shows what happened in the period after this vaccine was introduced into the general population so that would have been in 1954.

    这表明了,疫苗在一九五四年,引入大众后的一段时间内,发生了什么样的情况

    耶鲁公开课 - 生物医学工程探索课程节选

  • Second formula tries to relate the final velocity of some time, t, to the initial velocity and the distance traveled with no reference to time.

    第二个式子能把某段时间t的末速度,和初速度,经过的路程联系在一起,并且不引入时间

    耶鲁公开课 - 基础物理课程节选

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