In Dr Silverberg's view, special relativity gives Santa ample opportunity, within his frame of reference, to deliver all those presents in what is a blink of the eye by our frame of reference.

在西尔弗伯格博士看来，借助狭义相对论，圣诞老人在他的参照系中有充足的时间来递送所有的礼物，而这一切在我们的参照系中却只是眨眼之间。

youdao

Whether you stay in your reference frame or in the reference frame of the center of mass, it's immediately obvious that all the kinetic energy is lost.

无论你在对照系中，还是在质量重心体系，很显然，所有的动能都被损耗了。

youdao

Since this frame of reference-the earth –is rotating, motions that would be straight in a stationary frame of reference appear curved to the observer on earth.

由于参照系—地球—是旋转的，所以在静止参照系中应是呈直线运动，在地球上的观测者看来就成为曲线运动。

youdao

So the Earth is an inertial frame of reference, if you go in a train relative to the Earth at constant velocity, you're also inertial.

所以,地球是一个惯性参考系,如果你坐在相对于地球匀速运动的火车里,你也处于惯性状态

耶鲁公开课 - 基础物理课程节选

Then we've just shown here, it's an accelerated frame of reference.

就像这里写的一样,它是个有加速度的参考系

耶鲁公开课 - 基础物理课程节选

I gave you a law of transformation of the components; namely, if the vector has components Ax and Ay in one reference frame and Ax prime and Ay prime in another reference frame, how are the two related?

我介绍过分量变换的法则,即如果矢量在一个坐标系的分量为 Ax 和 Ay,在另一坐标系中的分量为 Ax' 与 Ay',它们有着什么样的联系

耶鲁公开课 - 基础物理课程节选

Books, historical events and the myths that grow up around them, places, memories and ways of doing things form a common frame of cultural reference that defines a nation.

ECONOMIST: Britishness

Nairobi, Kenya (CNN) -- When I think of the story of African women, I immediately think of my mother and I want to use her story as a frame of reference in how African leaders can improve the lives of women.

CNN: Opinion: 'African women need a hand-up not a hand-out'

While not an exact scientific measure, a sampling of U.S. doctrinal writings on IW could provide a useful frame of reference and possibly some context for comparison between Chinese and American thinking.

CENTERFORSECURITYPOLICY: What is IW?