When you have a velocity in the moving plane frame and you want to find the velocity on the ground, you should add to every object in the plane the velocity of the plane with respect to the ground.

当你在运动的飞机上运动,然后你想找到相对于地面的速度,你就应该给每个物体加上,飞机相对于地面的速度

耶鲁公开课 - 基础物理课程节选

Seventy-nine. In fact, if you add up each of these numbers, 9 you should get the decimal number 79 79 from this binary number here.

9，事实上，如果你把这些数字累加，你应该能从这些二进制中9,得到十进制数。

哈佛公开课 - 计算机科学课程节选

Maybe I will add this on as a problem you should do in your homework.

也许我会把这个作为,练习题加到你们的作业中去

耶鲁公开课 - 基础物理课程节选

It's very clear that if you want to take A and ask, "What should I add to A so I get the null vector?"

显然,你们会拿 A 来问,"拿什么来加矢量 A 可以得到零矢量呢"

耶鲁公开课 - 基础物理课程节选