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These man-made barriers will ensure a very high degree of protection for several hundred years.

这些人造屏障将会确保几百年的高度保护。

《柯林斯英汉双解大词典》

Martha graduated from high school two years ago.

玛莎两年前高中毕业。

《牛津词典》

But a few years later, the high sharp voice of Hank Williams would cut like a knife through the music world.

VOA: special.2009.11.22

These are the only countries that I've been able to find that have high-quality, repeat sales price indexes going back a hundred years.

只有这三个国家,在100年前就已经出现,优质的重复销售价格指数

耶鲁公开课 - 金融市场课程节选

Some, like the smallpox vaccine on one exposure generates a very high response that lasts for many years so you don't need a boost.

有一些疫苗,比如接触一次天花疫苗后,人体就能产生高水平的免疫应答,并持续很多年,所以无需再次接种

耶鲁公开课 - 生物医学工程探索课程节选

For 25 years high costs had confined fiber optics to handling long-haul tasks.

FORBES: Wired and Restless

Imagine an offensive lineman who plays four years of high school football, four more at college, and ten years in the National Football League.

FORBES: The Death of the NFL

Trevor is an award-winning academic who has worked many years at high levels on Wall Street.

FORBES: Wizards, Witches, and Flying Monkeys