"We can be proud of the positive contribution that our servicemen and women are making, in conjunction with our allies,".

VOA: standard.2009.12.25

One major difference between electron affinity and ionization energy is that when we talked about ionization energy, remember ionization energy always has to be positive.

电子亲和能,与电离能之间最大的不同就在于,当我们提到电离能的时候，记得电离能总是正的。

麻省理工公开课 - 化学原理课程节选

It turns out that it's going to be a little bit different when we're talking about positive ions here.

结果是当我们讨论阳离子时,有一些不同。

麻省理工公开课 - 化学原理课程节选

Yet the United Nation's children's fund says only one percent of those HIV positive mothers-to-be has access to drugs that would prevent transmission to their newborn.

VOA: standard.2009.04.24

I don't think that's gonna happen. What I really do hope is books like this and other actors coming to help religion and rights to be reconcile in a positive way. I don't think that's impossible at all.

我觉得这不太可能会发生，我真正希望的是,能有这样的书籍出现，或者其他的因素,促使宗教和人权和谐共处,走向和解的道路，我觉得这完全有可能。

普林斯顿公开课 - 人性课程节选

It can show to society that we can do what common people do, so that marginalization against HIV positive people in society can be reduced through football."

VOA: standard.2010.04.01

Also, the possibility that there might be some positive interaction effects.

同样也有产生正面互相影响的可能性。

耶鲁公开课 - 死亡课程节选

I think the way that they might react to his presence-we'll see how that is-probably a positive reaction, should resonate in the Arab media, and that should be positive,"

VOA: standard.2009.05.09

I'm pressing on the gas. So I expect that to be a positive number. The pressure is constant 0 p. The V goes from V1 to zero.

我们对气体加压,所以这应该是一个正数,压强是常数，p，V从V1变成。

麻省理工公开课 - 热力学与动力学课程节选

"Well,I think the message from the United States personally coming here will obviously be a positive impact,in the sense that President Obama's administration is deeply concerned about the displaced people,".

VOA: standard.2009.06.03

The highest probability now is going to be along the x-axis, so that means we're going to have a positive wave function every place where x is positive.

概率最高的地方是沿着ｘ轴，这意味着只要在ｘ,大于零的地方波函数都是正的。

麻省理工公开课 - 化学原理课程节选

"I think on balance it will be positive in the sense that it is stimulating a recognition beyond the shores of North America, that this needs to be dealt with better."

VOA: standard.2010.04.01

This was my first glance at plum pudding, and I guess you can see that this must be that positive part -- most of the plums are within that, and you can see all these little raisins or plums in here, that would be that negative charge.

我想你们可以，看到着一定是正电部分,大部分的李子,都在这里面，你们也可以看到,这些小的葡萄干或李子，这就是负电荷。

麻省理工公开课 - 化学原理课程节选

"China is underscreened. There's a demand for cinemas, and anything that will help increase the cinema going, improve the cinema going environment, will ultimately be a positive stimulus for the film production business."

VOA: standard.2010.07.06

Against that, you can imagine someone who thinks being alive per se is so incredibly valuable that no matter how horrible the contents are, the grand total will always be positive.

与之相反，你可以想象有些人会认为,活着本身有着巨大的价值,不管生活内容有多糟糕，总和都会是正数。

耶鲁公开课 - 死亡课程节选

Former Egyptian Foreign Minister and Arab League Secretary-General Esmet Abdel Meguid, who was involved in Middle East peace talks for many years, said that Mr.Obama's award appears to be a positive development for peace in the region.

VOA: standard.2009.10.09

But if life would no longer have anything good to offer you, if what you then would have had would have been something negative instead of something positive, then at that point, dying wouldn't actually be a bad thing.

但是当生命再也不能向你提供美好，届时我们面对的是,消极的而非积极的东西，那时死亡可能不是一件坏事。

耶鲁公开课 - 死亡课程节选

It's not going to be the kinetics that do it. We are starting to see positive effects like this in Helmand, where the Marines went in in July, in a place called Nawa, where the bazaar is open, as an example, and we see these classic counterinsurgency responses, where security exists,".

VOA: standard.2009.11.04