". At Friday's opening ceremony, several leaders noted past grievances with the United States while also expressing hope for a more productive and respectful relationship under President Obama.

VOA: standard.2009.04.18

Perhaps I'm more productive, I do better at my job.

也许我能更多产，把工作做得更好。

耶鲁公开课 - 死亡课程节选

So if I sleep more, I think I'll be more happy and more productive.

所以，如果我补充睡眠的话，我想我会心情舒畅，干活也更有效率。

I need 实战 - SpeakingMax英语口语达人

In the face of such skepticism, members of the Engagement Project hope their proposed new strategies will help guide the Obama Administration to a more productive dialogue between the United States and the Muslim world.

VOA: standard.2009.04.24

We make software; we make technology; we're innovative ,but so are they So, what we really have to do is become a lot more productive and we have to make our companies a lot more competitive. Today, I feel we're losing that edge.

我们生产软件；发展工业技术;,我们有创新能力，但他们也有,所以，我们现在必须要做的就是提高生产效率,我们必须提高我国公司的竞争力,现在，我觉得在这方面我们正在丧失竞争优势。

耶鲁公开课 - 金融市场课程节选

It can ensure that poor,rural people, whose lives and livelihoods, depend on the earth's productive capacity, have the means to produce more and to produce it better, GDP growth generated by agriculture has been shown to be at least twice as effective in reducing poverty as growth in other sectors. In recent years, more attention is being paid to the importance of smallholder farms.

VOA: standard.2010.03.29

In 1860 slaves as an asset were worth more than all of America's manufacturing, all of the railroads, all of the productive capacity of the United States put together.

860年,奴隶作为财产的产值超过了,美国所有的制造业,所有的铁路,和所有产业的产值总和

耶鲁公开课 - 美国内战与重建课程节选