At a recent discussion about illegal drugs at the James A.Baker Institute for Public Policy at Rice University, DEA intelligence chief for the Houston sector,Gary Hale, said one sign of progress is that the cartels are seeking other sources of income, with drugs comprising only about "What does that mean?

VOA: standard.2009.12.18

So, one of the things that you can do is to become technically literate so you can become part of the discussion and help formulate sensible policy.

其中你能做的一个就是,成为技术达人,这样的话你就能够参与讨论,并且帮助制定可靠的政策。

麻省理工公开课 - 固态化学导论课程节选

So, one of the things that you can do is to become technically literate so you can become part of the discussion and help formulate sensible policy.

其中你能做的一个就是,成为技术达人,这样的话你就能够参与讨论,并且帮助制定可靠的政策。

麻省理工公开课 - 固态化学导论课程节选