Owing to the different philosophical concepts, social patterns, and historical backgrounds, western and eastern time concepts bear great diversity.

由于中西哲学观、社会模式、历史背景的不同，导致中西方对时间的看法有很大的差异性。

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At the same time, Concepts are souls of the actions, which decide and change our teachers' classroom teaching actions.

同时，观念又是行动的灵魂，它决定和改变着我们教师的教学行为。

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Sometimes, sciencecan seem overwhelming. There are complicated concepts, unimaginably large - or small - objects, and vast distances that most people have a hard time understanding.

VOA: standard.2010.05.04

This is the world, particularly the legal world, catching up with where religious and cultural concepts have been for a very long time.

这就是这个世界，尤其是法律世界，向宗教和文化概念靠拢的地方,而后两者已存在很长时间了。

普林斯顿公开课 - 人性课程节选

for exam 2, you still need to know and understand everything you learned in exam 1, but you can put off learning it completely until we get through, at least, next Wednesday before we start maybe spending time on these concepts outside of class.

为了掌握第二次考试的内容，你仍然需要知道和理解,在第一次考试前所学的全部知识，但是你可以先放一放，等到我们进行到，至少在下周三我们可能开始不在课堂上,讲这些内容之前。

麻省理工公开课 - 化学原理课程节选

His blog, terrytao.wordpress.com, is well written and spends little time watering down concepts for the public.

FORBES: Magazine Article

He succeeded brilliantly: 114 detailed maps in line with the text, hundreds of margin notes, a header on every page showing time and place, and 11 appendixes that illuminate military, economic and political concepts of the time.

FORBES: Magazine Article

In the current model, students have a fixed amount of time to learn new concepts.

FORBES: How to Bring Quality Online Education to a Global Student Population