It means, when you are accelerating upwards, as the elevator picks up speed, the reading on the spring will be more and you will feel heavy.

也就是说当你向上做加速运动时,就像电梯加速的时候,弹簧的读数会增大,你会觉得自己变重了

耶鲁公开课 - 基础物理课程节选

It's as though the ordinary earthly objects, we bump into them or they bump into us, and they get us to look upwards to the heavenly Platonic realm.

好像这些寻常的世俗的事物，不管是我们遇到他们还是反过来，这些事物让我们向上看到了,神圣理想的国度。

耶鲁公开课 - 死亡课程节选

The argument that eliminates strategies 67 and above, or 68 upwards, that strategy just involves the first lesson of last time: do not choose a dominated strategy, admittedly weak here, but still.

剔除67以上或者68以上的过程,仅仅用到了上堂课所提到的第一个结论,即不要采用劣势策略,虽然这里是弱劣势,但同理

耶鲁公开课 - 博弈论课程节选

Imagine that rod shooting upwards.

想象一下铁棒从头顶射过。

耶鲁公开课 - 心理学导论课程节选

Now, what happens if the elevator is accelerating upwards with an acceleration a?

现在如果电梯向上以加速度 a 运动,会发生什么呢

耶鲁公开课 - 基础物理课程节选

By the way, I didn't tell you this but I think you know that I picked my origin to be here and measured y positively to be upwards and I called that 15 meters.

顺便说一下,虽然我没明确指出,但我想你们应该都知道,我把原点取在这里,并规定y的正方向朝上,我设把这里的高度为15米

耶鲁公开课 - 基础物理课程节选