The new report "couldn't come at a better time", says Gerald Wheeler, executive director of the National Science Teachers Association in Arlington.
位于阿灵顿的美国国家科学教师协会执行理事杰拉尔德·惠勒表示,这份新报告“来得正是时候”。
An early study gave participants abundant time to complete problem solving and word association exercises.
一项早期研究给参与者充裕的时间来解答问题并完成词汇联想训练。
For a long time, people thought that we learned a language only by imitation and association.
长期以来,人们认为我们只能通过模仿和联想来学习一门语言。
The American Heart Association recommends reducing time spent in heavy traffic or jogging during rush hour, or near busy roadways and better treatment for cardiovascular risk factors.
VOA: standard.2010.08.04
On the sidelines of the APEC meetings, Mr.Obama will,for the first time, meet with leaders from all ten members of the Association of Southeast Asian Nations, including Burma.
VOA: standard.2009.11.08
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