The same relation should hold when the source and receiver are at rest and the medium moves with velocity v . 当光源与接收器静止而媒质以速度V运动时，同样的关系式成立。
Bed load particles move spasmodically, perhaps at long intervals, and are at rest on the stream bed most of the time . 推移质颗粒多半作间歇运动，而大部分时间则停歇在河床上。
He pictured himself brought home from the river, dead, with his curls all wet, and his sore heart at rest . 他又幻想着自己淹死了，被人从河边抬回来，头发浸得透湿，他那伤透了的心可是得到安息了。
If no wind is blowing, raindrops fall vertically and a man at rest with an umbrella directly over his head does not get wet . 如果不刮风，雨点是垂直下落的，一个静止不动的人，头上有一把雨伞，就不会淋湿。
If you were content to remain at rest or in uniform motion relative to an unaccelerated frame of reference, no force would be needed . 如果你愿意相对于一个非加速的参照系去保持静止或匀速运动，并不需要有力作用。
Now and then a carrier lay dead in harness, at rest in the long grass near the path, with an empty water-gourd and his long staff lying by his side . 在进行中不定什么时间就会有脚夫倒下死去，长眠在路边的深草中，身边放着空水葫芦和使用的长棍。
What is full when it ' s used and empty when it ' s at rest 什么东西用时满闲时空？
We are not at rest ; we are on a journey 那就是，我们并不安闲，我们都是在旅途。
Then my heart will be set at rest , then indeed 那时候我就放心了，那时候也就”
