His research began with fruit flies, but over the last two decades, his focus has been on parasitic protozoa, single-celled organisms that cause major diseases.

VOA: standard.2010.04.05

So honestly, one of the best strategies in this course and in programming in general is-- generally speaking design, but it's these little tricks of the trade that will honestly make things much more fun, much more easier, and really allow you to focus on the juicy parts of the problem and not little tiny bugs that you may have started tripping over already.

说实在的，这堂课在编程方面最棒的策略之一,简而言之，就是--设计，但这只是一些让事情更简单,更容易的小技巧，让你专注于问题的核心关键,而不是一些可能让你绊倒的,这样或那样的小错误。

哈佛公开课 - 计算机科学课程节选

Pakistan says resumption of the dialog must focus on resolving the long-standing disagreement over the Kashmir region, claimed by both countries and a catalyst for several of their wars against each other.

VOA: standard.2009.06.11

"Any discussion of settlements, any discussion of the issues of living in East Jerusalem, should not take precedent over the primary focus of import which is the growing threat of a nuclear Iran,"

VOA: standard.2009.08.06

Mr.Obama used his weekly address to re-focus attention on his budget plan and get it through Congress, after a week dominated by outrage over huge bonuses paid at companies that are being bailed out by the government.

VOA: standard.2009.03.21