It can be very hard to see the everyday chemistry at work, but nearly everything you touch has some chemicals in it.
我们可能很难看到日常的化学作用，但几乎你接触的所有东西都有一些化学物质。
Over these years, one conclusion has become increasingly clear: the more hard focus you dedicate to a technical subject - be it computer science, chemistry, or physics - the better you get.
过去的这些年，有个结论越来越清晰，即你在技术学科如计算机科学、化学或物理方面研究的越多，你将得到的也越多。
Paul Crutzen, winner of the Nobel Prize in chemistry, finds it hard to believe. "it's incredible to see what a single word changes," he says.
诺贝尔化学奖获得者保罗·克鲁岑表示这真是令人难以置信。
It was terrible. I studied very hard for my chemistry exam last week.
太糟糕了。我上周为化学测验而努力学习了。
We live in exciting times as biology is becoming a "hard" science like physics and chemistry. We are on the brink of realizing many of the promises of the era of genomics.
我们生活在一个日新月异的时代，生物学正在成为如同物理学和化学那样的绾“硬”科学。
I'll work hard to learn as much as possible particularly chemistry mathematics and physics.
我会努力学习尽可能多的尤其是化学数学和物理。
Chemistry is so boring. It's hard to go to class when I have no incentive.
化学课太枯燥了，没有动力，去上课就很困难。
We live in exciting times as biology is becoming a "hard" science like physics and chemistry. We are on the brink of realizing many of the promises of the era of genomics.
我们生活在一个日新月异的时代，生物学正在成为如同物理学和化学那样的“硬”科学。
Yet economists seem unlikely to abandon the belief that theirs is a discipline that makes "progress" and settles issues, in a way that resembles a hard science such as physics or chemistry.
随后的金融和经济危机可能打击了某些经济学家的信心，尤其是其学科的信条。
Organic chemistry is so abstract and full of a large number of knowledge that the beginners may find it hard to master, especially the stereochemistry.
尽管有机化学知识点多、抽象，初学者觉得难以掌握，尤其立体化学问题更让人头疼。
I determined to work hard at chemistry.
我决心刻苦学习化学。我决心刻苦学习化学。
She chatted with a member from each sorority on various topics, trying hard to find chemistry with each member.
她同每个姐妹会中的一位成员就五花八门的话题展开交谈，极力地想在每位成员的身上找到默契。
Such is our chemistry teacher, kind and hard-working.
这就是我们的化学老师，又善良又努力。
Such is our chemistry teacher, kind and hard-working.
这就是我们的化学老师，又善良又努力。
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