你有没有绳子来把这些箱子捆好？

Have you got some twine to tie this box up?

youdao

即使是现在，它们仍然相信自己会受制于这条绳子，所以没有勇气尝试挣脱。

Even now, they believe the rope can still control them, so they have the least courage to try to break free.

youdao

桑德尔摇摆了一下，没有摔倒，蹒跚地退到绳子旁边就支撑住了。

Sandel swayed, but did not fall, staggering back to the ropes and holding on.

youdao

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

In all these examples, this rope is assumed to be massless.

在所有这样的题目里都假设绳子没有质量

耶鲁公开课 - 基础物理课程节选