Many people are encouraged by Campbell's story and they give away free materials to him.
许多人被坎贝尔的故事所鼓舞,他们免费给他提供材料。
There are abundant free materials available on the Internet.
因特网上有丰富的免费资料提供。
I'll especially emphasize free resources — IBM's free materials are exceptional.
我将特别介绍一些免费的参考资料——特别是IBM的免费材料。
She says only about two hundred informal schools across the country receive money for materials under the free primary education program.
VOA: special.2009.08.24
That was Governor Arnold Schwarzenegger in June, talking about his effort to get schools to use materials available free online.
VOA: special.2009.08.27
Some materials are available free at Web sites like the Purdue Online Writing Lab,or OWL.
VOA: special.2010.02.11
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