While researching Yosemite's archives, he learned that for three years, around the turn of the twentieth century, black U.S.Army regiments patrolled the park.

VOA: standard.2009.11.25

Someone else is going to come in and produce cola in this industry and that's exactly what happened in the U.S. At the turn of the last century.

其他公司会参与进来也生产可乐,这就是上个世纪末在美国发生的事情

耶鲁公开课 - 博弈论课程节选

And that way, you'd make a u-turn and then I'd owe you a lot more money,

那样的话，你掉头行驶，我就得付更多钱了。

Is there 实战 - SpeakingMax英语口语达人

The Gadhafi affair follows concessions by Switzerland's biggest bank,UBS, to turn over data on 4,500 wealthy American clients suspected of tax evasion to U.S.authorities.

VOA: standard.2009.08.23

But Republicans insist only the private sector, and not government, can turn the U.S.economy around.

VOA: standard.2010.06.18

The idea is to replicate the so-called Sunni Awakening in Iraq's Anbar province, where the U.S.exploited simmering resentment of al-Qaida to turn the tribes against the radical insurgents.

VOA: standard.2009.03.11

U.S.officials acknowledge that, even if the situation in Afghanistan begins to turn during the next 12 months, the U.S.withdrawal will likely be very gradual, and some number of international troops will be needed in Afghanistan for many years to come.

VOA: standard.2010.07.22