By developing teachers' skills and providing schools with the needed resources, he believes more students will be inspired to become America's future scientists.

VOA: standard.2009.11.25

are providing unprecedented learning resources.

能提供前所未有的学习资源。

关于网络世界 - SpeakingMax英语口语达人

are providing unprecedented learning resources.

能提供前所未有的学习资源。

关于网络世界 - SpeakingMax英语口语达人