So that's a big help. And equilibrium happens when there isn't any possible change of state that would satisfy this.

这个非常方便，当所有的变化,都无法满足这个公式的时候,系统就达到了平衡。

麻省理工公开课 - 热力学与动力学课程节选

But it's a big help and it's kind of interesting instant reaction to things.

它确实有用,可以即时地把信息反馈回来

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So we make a big minor map which they help to paint.

因此我们在孩子们的帮助下,绘制了一幅小型地图。

麻省理工公开课 - 媒体、教育、市场课程节选