So, nitrogen is shown here, we know that because it has 7 electrons.

那么这里显示的是氮，我们能看出来是因为它有七个电子。

麻省理工公开课 - 化学原理课程节选

This particle is constantly changing its direction, but it therefore has an acceleration and the acceleration, we have shown here, is pointing towards the center.

这个质点恒定地改变它的运动方向,因此它具有加速度,而且这个加速度,我们前面也讲过了,指向圆心

耶鲁公开课 - 基础物理课程节选

And also, it's useful because harmful stimuli are noticed but when something has shown itself to be part of the environment you don't notice it anymore.

而且它还是非常有用的,因为危险刺激会吸引到你的注意,但当某物被视为环境的一部分时,你便不会再去注意到该物体。

耶鲁公开课 - 心理学导论课程节选

It has been shown that even today people seem to think that.

即便如今,人们似乎仍然无法理解概率

耶鲁公开课 - 金融市场课程节选