And video games are one of those methods that are assured to be very effective."

VOA: standard.2010.04.20

Now, the polio vaccine that Salk produced was very effective, but it required a fairly large dose of the vaccine and it had to be injected into the arms of children.

索尔克生产的小儿麻痹症疫苗效果显著,但是,该疫苗的单支注射剂量非常大,而且必须通过小孩的手臂进行注射

耶鲁公开课 - 生物医学工程探索课程节选

My guess is that it's going to be very effective,".

VOA: standard.2010.01.12

And should that baby be born preterm, we should care for that baby by providing a package of interventions that have been shown to be tried and true and very effective."

VOA: special.2009.10.26

"we would be forced to buy power that we don't need and idle existing generation or have hydro that is very cost effective -- very cheap,actually -- being replaced by very expensive power."

VOA: standard.2010.03.23

Dr.Lepora says she will probably return to MSF, because she says once she learned how to be effective in a crisis situation, she finds it very difficult not to act when another crisis comes up.

VOA: standard.2010.06.29