Economists say unemployment will likely remain stubbornly high for a year or more after the country emerges from recession.

VOA: standard.2009.10.01

Because on second exposure there's another population of cells that I haven't mentioned before that remain after the primary exposure and those are called memory cells, they're down here.

因为在再次免疫中,有另外一些细胞,我之前并没有提到过它们,在初次免疫结束后保留下来的细胞,被称为记忆细胞,它们在下面

耶鲁公开课 - 生物医学工程探索课程节选

People in serious accidents with their paralysis as the result of the accident, very often, usually-- again, this is all the average-- go back to their base level of happiness: if they are happy before, they will be happy one year after; if they are unhappy, they will remain unhappy.

遇到严重意外的人,意外导致瘫痪，经常地，一般性的…,再次强调，这是平均而言-,都会恢复到基础幸福水平：,他们以前是快乐的，一年后，他们也会快乐;,如果不快乐，将维持不快乐。

哈佛公开课 - 幸福课课程节选

The two countries remain technically at war, more than 50 years after fighting in the Korean War ended.

VOA: standard.2009.08.21

Campaigners say it has helped to shine a spotlight on the violent consequences of the trade in illicit diamonds - a spotlight they hope will remain even after the celebrities have left.

VOA: standard.2010.08.09