Then they add aerobic exercises that get the heart and lungs to work harder and promote circulation.

VOA: standard.2010.02.26

Because it's so important. And I should add and also under reversible work, where the external pressure is equal to the internal pressure.

而且我还要说应该在外部压强,和内部压强相等的,可逆过程中引入它。

麻省理工公开课 - 热力学与动力学课程节选

But when you start doing scientific research or financial work, imprecision and rounding errors start to add up.

但如果你碰到涉及科学研究,或财政方面的项目时，不精确度,和错误就会累加。

哈佛公开课 - 计算机科学课程节选

Rural areas are largely untapped. "So the government needs to work hard to diversify its export commodities, export products, add more value by processing more, let's say agriculture production in the country and thereby create more jobs to help the economy grow faster."

VOA: standard.2010.06.02

And the first law says, well heat and work are different forms of energy, and we can add them, and the path dependence of these two things is somehow cancelled in the fact that we have this internal energy.

热力学第一定律说，热和功是能量的不同表现形式，我们可以把它们加起来,它们与路径相关的部分相互抵消,我们就有了内能。

麻省理工公开课 - 热力学与动力学课程节选

It's important to counter it, to add to it, academic work, studying others.

要克服这个问题，把学术工作，研究他人融入进去很重要。

哈佛公开课 - 幸福课课程节选