I lighted my lantern, and found that I was perched on a narrow ledge, almost at the end of my rope literally and figuratively.

VOA: special.2009.12.07

So, a massless body cannot have a net force on it, because the acceleration of the rope cannot be infinite.

所以没有质量的物体不会受到力,因为绳子的加速度不可能是无穷大

耶鲁公开课 - 基础物理课程节选

Suppose I had a rope, that stretched from that into the room, all the way across-- to this end of the room.

假设我有一根绳子，从屋子的这一端，一直伸展到-,屋子的这一端。

耶鲁公开课 - 死亡课程节选

In another event, the cowboy throws a rope around the neck of a young cow.

VOA: special.2009.02.16

you're looking for that equal and opposite forces acting at two ends of the rope.

你就得求出作用在绳子两端的,大小相等方向相反的力

耶鲁公开课 - 基础物理课程节选

This nest is made up of thousands of pieces of bamboo tied together with the kind of brightly colored rope usually used by mountain climbers.

VOA: special.2010.08.13

The rickety bridge is one that's kind of a rope bridge.

摆桥是索桥的一种。

耶鲁公开课 - 心理学导论课程节选

We run a tight rope daily, balancing a pile of books on the head.

VOA: special.2009.06.28

What makes up a rope? Of course you know, ropes are basically bundles of fibers, very same fibers that have been woven together in a certain way.

绳子是由什么构成的？，你肯定知道，是由一束束纤维构成，是由一样的纤维按某种方式编织,在一起构成。

耶鲁公开课 - 死亡课程节选

Then he tries to tie the rope around three of its legs.

VOA: special.2009.02.16

If your plan is to accelerate a 3 kg mass with an acceleration of 2 meters per second, you better have a rope that can furnish that force and it can take the tension of 6 Newtons.

如果你想用 2 米每秒平方的加速度,去拉一个 3 千克的物体,那么你就需要一根能提供拉力的绳子,并且它能够承受 6 牛的张力

耶鲁公开课 - 基础物理课程节选

The nucleus contains rope-like strands of DNA that carry the information.

VOA: special.2010.03.23

You feel the thrill of having made it to the top and the wind bracingly striking your chin and you feel the satisfaction and you've got the memories of having almost died when the rope broke before.

你感受到登顶的兴奋,风吹袭你的脸颊,你获得满足感,你记得差点死去,当绳子断掉时。

耶鲁公开课 - 死亡课程节选

A leash is a kind of rope.

VOA: special.2009.03.29

We know there is no thing called a massless rope, but most ropes have a mass, but maybe negligible compared to the two blocks you are pulling, so we'll take the idealized limit where the mass of the rope is 0.

我们都知道无质量的绳子是不存在的,是绳子就有质量,但是相比于这两个物体就可以忽略不计了,所以我们有了这个理想的条件,即绳子的质量都是 0

耶鲁公开课 - 基础物理课程节选

Each trawl is basically a rope strung with twenty-five lobster traps - wire cages,each the size of a big trunk.

VOA: standard.2010.07.20