在紧急情况下能否保持冷静是对一个好司机的严峻考验。

The acid test of a good driver is whether he or she remains calm in an emergency.

《牛津词典》

香农指出，噪声限制了信息在保持无差错的情况下沿通信信道传递的速度。

Shannon showed that noise sets a limit on the rate at which information can pass along communication channels while remaining error-free.

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这里的成本削减定义为在保持劳动力数量不变的情况下提高劳动力产出。

Cost-cutting here is defined as raising labor output while holding the amount of labor constant.

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If you wish to change sections, you may do so only with permission of the subject administrators because it's very important that those sections be kept at a small population.

如果你们想要改时间，你只能在课程管理主任允许,的情况下这样做,因为让课程的人数保持在比较少的水平,是很重要的。

麻省理工公开课 - 固态化学导论课程节选

The question was whether we were looking to take more short positions as the economy appears to be moving into recession and I guess the second part of the question was how do you remain bullish in this kind of environment.

问题是,在经济表现出走向衰退时,我们是否会做更多空头,我想这个问题的另一面就是,在那种情况下如何保持市场信心

耶鲁公开课 - 金融市场课程节选

We said, "Let's take, for the simplest case that we can possibly imagine, namely a particle moving in one dimension along the x-axis with a constant acceleration a.

我们说过,"考虑我们可以想象的最简单的情况,即质点在一维空间运动,沿着 x 轴且保持恒定加速度 a

耶鲁公开课 - 基础物理课程节选