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Centuries later, in the years of Tang, Song and Yuan Dynasties, such silk routes, both over land and at sea, great adventurers, including Du Huan of China, Marco Polo of Italy, left their footprints along these ancient routes.

几个世纪后的唐宋元时期，中国的杜环、意大利的马可·波罗等伟大冒险家在海上和陆上的古老丝绸之路上留下了足迹。

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Each trip lasted between two and four years and it is believed he sailed more than 50,000 km during the years of his travels.

每次旅行持续2到4年，据信，在他的旅行期间，他航行了超过5万公里。

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Those were the years of the great wave of European immigration, before the United States passed restrictive immigration laws.

VOA: special.2009.06.29

This parable may seem, I think, to be a little more compatible with Milton's general temperament in the years of his studious retirement.

我认为，第二则寓言与弥尔顿，的性情更相符,在他潜心学习的那几年里。

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at the end of their four years, that they feel cultured and familiar with, um, I guess the Western world,

让学生在四年的学习之后具备一定的文化素养，能够熟知西方世界及其文化。

哥伦比亚大学的教程 - SpeakingMax英语口语达人

They ignore the 21 years of decline in favor of the recent 12 years of growth.

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The fishing nets themselves are considered toxic after the years of catching so much sea life.

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Mr Mousavi served as prime minister during the years of the Iran-Iraq war from 1980-1988.

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