The decline in American Indian languages has historical roots.

美国印第安语言的衰落有其历史根源。

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He believed that the "pace and pattern" of economic activity had deep historical roots.

他坚信，经济活动的“步伐和模式”有深刻的历史根源。

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The blame game won't work because British tennis has shortcomings with deep cultural and historical roots.

谴责根本起不到任何作用，因为英国的网球，缺少深刻的历史文化根源。

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The religious differences that contribute to Iraq's sectarian violence have deep historical roots.

NPR: Early Divisions at Root of Sunni-Shia Conflict

When serial entrepreneur Luke Johnson approached him about making a documentary looking at the historical roots of the crisis, Lambert jumped at the opportunity.

FORBES: From 'Undercover Boss' to the Economic Crisis

Some things that seem characteristic of our media-saturated age turn out to have deep historical roots, while others that look permanent are actually quite recent.

FORBES: Magazine Article