More than 15 million Americans are out of work, and 7.2 million jobs have been lost since the recession began in December,2007.
VOA: standard.2009.10.03
And in practical terms, we can define the efficiency as the ratio of the heat in to the work out.
在实际中,我们定义,效率为热与功的比值。
And they are coming in and out of the country just to work,
而且,他们进出这个国家只是为了工作,
You couldn't just run something successfully in a cycle and get work out of it, using the heat from the hot reservoir, without also converting some of the heat that came in to heat that would flow into a cold reservoir.
如果一样东西在循环工作过程中,只有热从高温热源中流出,而没有热流入低温热源,那么此过程,不可能对外做功,不可能把所有热。
And he says on page 884: A poet writes always of his personal life, in his finest work out of its tragedies, whatever it be, ; remorse, lost love or mere loneliness; he never speaks directly as to someone at the breakfast table there is always a phantasmagoria.
84页他说道:,诗人总写自己的生活,最好的作品总是悲剧,不管是后悔,失恋或孤独;,这是他不会在餐桌上讲的,总是有这样一种幻境。
Well, Willett and others were doing studies for a number of years finding that Trans fats were having a very negative impact on health, but nobody paid much attention and they couldn't get much attention out there in the world for this kind of work.
威莱特等人多年的研究发现,反式脂肪对健康有着非常负面的影响,但没有人对此多加注意,研究者们也无法让大众注意到他们的研究
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