He says what South Korea and its allies have a problem with is the North's ability to deliver weapons of mass destruction at a long range, regardless of what is mounted on top of this particular rocket.

VOA: standard.2009.04.01

I mean, the atom has a tiny mass, too, but what we are saying is compared to the totaled atomic mass, the mass of the electron is tiny.

我的意思是，原子的质量也很小，但是我们说的是,和整个原子质量相比，电子的质量是很小的。

麻省理工公开课 - 固态化学导论课程节选

We have not yet found a satisfactory answer to what's the mass of an object?

我们还没有一个令人满意的答案,物体的质量到底是多少

耶鲁公开课 - 基础物理课程节选

If the vehicle in the unfortunate circumstances of a collision, has to be able to maintain the security of the hydrogen which means more mass, which means a lot of the efficiency is being squandered What's the environmental impact of hydrogen production?

如果车辆,在碰撞中发生了不幸，要仍然能够保持氢气的安全性的话,意味着需要更多的质量，也就是说大部分效率被浪费了,制氢对环境有什么影响呢？

麻省理工公开课 - 固态化学导论课程节选

It's a Requiem mass. What's a mass?

这是一个安魂弥撒曲,什么是弥撒曲

耶鲁公开课 - 聆听音乐课程节选

What happened finally, is that the press got wind of this and the scientific evidence grew to such a large mass that the evidence was pretty overwhelming, and then finally, government took action on this.

最终是先由新闻界得到风声,然后科学依据如雨后春笋般涌现,强而有力,势不可挡,最后终于让政府按耐不住,开始行动

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

You cannot say to me, "Take a force, due to a spring, and see what force it applies and divide by the acceleration and get the mass, " because we haven't defined force, either.

你不能说,"给弹簧施加一个力,看看它能提供多大的力,然后除以加速度,得到质量",因为我们还没给力下一个定义

耶鲁公开课 - 基础物理课程节选

A typical problem that you may have done in your first pass at Newton's law, someone tells you a force of 36 Newtons is acting on a mass of whatever, 4 kilograms; what's the acceleration?

在你们第一次接触牛顿定律时,可能见过这么一道典型题目,告诉你,一个 36 牛的力,作用在一个物体上,4 千克吧,问加速度是多少

耶鲁公开课 - 基础物理课程节选