Lee's army still held strong defensive positions along high ground south of Fredericksburg.

VOA: special.2009.10.15

And I have actually seen evidence over the years, mercifully, just a small amount of evidence, but there are, in a group like this, always a few students who come in with a really strong background in high school.

这几年我已经见到了实例，令人感激的是，只有小部分人，但在这，像这样的一个小组，总有一些来到我们这的学生,在高中打下了良好的基础。

麻省理工公开课 - 固态化学导论课程节选

So strong bonds means high melting points and boiling points.

因此，如此强的化学键意味着更高的熔点,和沸点。

麻省理工公开课 - 固态化学导论课程节选

In testimony to Congress this week, U.S.Federal Reserve chairman Ben Bernanke agreed with economists who caution that despite hopeful predictions of moderately strong economic growth unemployment is likely to remain high well into 2010.

VOA: standard.2009.12.05