That is, a consumer who pays u(q)for the quantity q is just indifferent to getting nothing and payingnothing.

对于每一个数量来说，都存在且存在一个价格，使得购买或不购买对消费者来说，在价值上毫无差别。

youdao

Sam: Just before the party began, I got a phone call. "Hello America" won two U. s. A. News Awards. One for Connie's show on education and employment.

山姆：就在这个聚会开我接到一个电话，“你好，美国”节目获得了两项美国新闻大奖。一个是是康妮做的教育和就业新闻。

youdao

Consider this: Japanese GDP growth from 1990 to 2000 — Japan's so-called lost decade — was just 0.2 percent less than America's when you account for increases in the U. S. population.

考虑到日本1990年至2000年的GDP增长——日本人所谓“失去的十年”——如果算上美国人口的增长，不过比美国低了0.2%。

youdao

But food is just the beginning. Marty Ross works for the United Soybean Board which is a U.S.trade group.

VOA: standard.2010.02.01

So, I just want to write a few examples down with a few values for delta u or delta H or delta S, and see whether we can get any clues from what we see.

我先写一些例子,例子包含一些内能，自由焓和熵的变化数值，然后看从中,我们能不能得到一些启示。

麻省理工公开课 - 热力学与动力学课程节选

And we can we can do this in principle except for one important detail, which is that enthalpy just like energy u isn't measured on an absolute scale but on a relative scale, right?

除了一个重要的细节,就像能量U一样，它不是,以绝对标度度量的,而是以相对标度度量的，对吧？

麻省理工公开课 - 热力学与动力学课程节选

While the data are hard to find and isolate for just the U.S., which remains the dominant home for the infrastructure of the digital economy (for now), the global trends are indicative.

FORBES: Information Technology Has Created a New Electric Demand Paradigm

So will the result be global standards or just new rules for the U.S. banks?

FORBES: "Global" Bank Regulation -- Stranded in the U.S.?

So despite research documenting the health and productivity benefits of taking time off, a long vacation can be undesirable, scary, unrealistic or just plain impossible for many U.S. workers.

CNN: Why is America the 'no-vacation nation'?