It was once home to many silver mines and towns that grew up around them.

VOA: special.2009.08.16

But once in awhile, one of these plus twos comes in almost on axis, and it gets whipped around by the Coulombic repulsive forces.

但是偶尔一个带两个正电荷的粒子,以接近于轴的位置进入，会快速的移动到周围,由于库仑斥力的作用。

麻省理工公开课 - 固态化学导论课程节选

If it takes you 1 / 60 of a second to go around once, then you do it 60 times a second.

如果转一圈要 1 / 60 秒,那么一秒就转了60圈

耶鲁公开课 - 基础物理课程节选

Once again, he ordered his men to march around the end of Lee's line.

VOA: special.2009.11.26

Once an invention is seen to work it is rapidly copied around the world.

而当一种创新品运行顺畅的时候,就会在世界范围内被模仿

耶鲁公开课 - 金融市场课程节选

Once,he stopped suddenly, and then walked around a part of the frozen stream.

VOA: special.2010.05.01

But, part of the reason I think is, globalization is creating a global culture and the excitement and enthusiasm that we once saw in isolated cities, like Los Angeles, are spreading out and are seen more and more around the world.

不过,我认为原因之一是,全球化塑造了全球性的文化,原来只存在于单个城市,例如洛杉矶,的狂热与激情,扩散到了全世界各地

耶鲁公开课 - 金融市场课程节选

Pakistan launched a major offensive in and around Swat in late April to check the Taliban advances in the northwestern mountainous valley, once a popular tourist resort.

VOA: standard.2009.09.11