在权力集中掌握在少数国家的时代背景下，“布雷顿森林体系”由44个国家共同制定而成。
The Bretton Woods system was forged by 44 countries at a time when power was concentrated in a small number of states.
在不同时代背景下对奥林匹克进行研究都是一个崭新的课题。
To study the context of the Olympic at different times is a new topic.
美国现实主义法律思想是在特定的时代背景下，以实用主义哲学为理论基础而兴起的。
The rise of American realism legal thought, based on pragmatism theoretically, is under particular background of The Times.
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