A friendly nod or a wave of acknowledgement in response to an act of courtesy helps to create an atmosphere of goodwill and tolerance so necessary in modern traffic conditions.

对礼貌行为的友好点头或挥手感谢有助于创造带有善意的宽容氛围，这在现代交通条件下是非常必要的。

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Modern humans have lived for most of their existence as hunter gatherers, so much of human nature has presumably been shaped for survival in such conditions.

现代人多数时候以狩猎采集为生，人性的很大一部分可能是在这种生存条件下形成的。

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In an article in the Journal of happiness Studies, Zhang and Veenhoven (in press) compare the ancient Chinese versions of Taosim, Buddhism and Confucianism with the modern conditions of happiness.

《快乐研究志》的一篇文章中，张和温候芬(出版中)将古代中文版的道教、佛教及儒教放到现今的快乐条件下进行比较。

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"There is a need to change the ideology and psychology of doing business in modern conditions,".

VOA: standard.2010.02.03

That efficient metabolism that banks calories is highly efficient, highly important, highly adaptable, under circumstances where food is scarce, but not efficient and not adaptive under modern food conditions in the developed world.

能高效存储能量的代谢系统,在食品短缺的情况下,非常重要,有着较强的适应能力,但却不能适应,现代发达国家的食品环境

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

In modern conditions moreover, U.S. society seems peculiarly vulnerable.

FORBES: The Petraeus Affair and the Risk of Blackmail: Another Nail In America's Coffin

Through 3 years of combat, American service members and allied forces overcame some of the most unforgiving conditions in modern warfare.

WHITEHOUSE: The White House

Besides the advances in the development and application of modern health sciences, this has resulted from the drastic reduction in filthy and unsanitary living conditions that economic growth has made possible as well.

FORBES: Economic Growth, Not Redistribution, Most Benefits The Poor, Working People, And The Middle Class