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》

In theory, these machines should last for ten years or more.

从理论上讲，这些机器应能用十年以上。

《牛津词典》

The true cost of these experiments to the environment will not be known for years to come.

这些实验对环境造成的确切代价在未来数年内是看不见的。

《牛津词典》

These were people under the age of sixty and those who had smoked for less than twenty years.

VOA: special.2009.06.23

Moses will later marry Zipporah, one of these women, and live as a shepherd in Midian for about 40 years.

后来摩西与西坡拉结婚，她是那些女人中的一个，作为一个牧人在米甸生活了大约四十年。

耶鲁公开课 - 旧约导论课程节选

And, he worked for a little less than 10 years at McGill where he did more work on these particles that radiate from radioactive elements.

他在McGill工作了将近10年,在McGill期间做了更多的,关于放射性元素的放射性的工作。

麻省理工公开课 - 固态化学导论课程节选

The guilds have been preparing for these negotiations for years, hiring staff with extensive labor union experience, and developing joint strategies and a harder line than producers have seen in decades.

NPR: Film and TV Writers Go on Strike

While researchers have investigated these topics for years, this new effort represents the first inter-agency formal step for Canada.

MSN: Astronaut study holds promise for the elderly here on Earth

What makes Hollywood's current love affair with redneck culture so intriguing is that it has demonized these folks for years.

CNN: Rednecks' turn to shine?