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。

youdao

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。

youdao

Cut down on the wrinkle-free materials. Five minutes of ironing will spare you from a lifetime of PFC exposure.

少用非褶皱材料，五分钟的熨烫会让你免于长时间暴露在PFC（全氟化碳）之中。

youdao

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

The future growth of the Valley hangs less on under-age college boys in search of tequila than on maquiladoras which assemble duty-free materials with cheap Mexican labour into products for export back into the United States.

ECONOMIST: One river, one country

Morningstar.com: Free materials on this site include ETF spotlight articles, volatility and risk ratings for various ETFs, total returns for funds going back as far as 15 years and portfolio breakdowns by individual securities, as well as sectors.

WSJ: Best Websites for Screening ETFs

However, too much public focus on these opportunistic feedstocks has presented a misleading picture that free raw materials are widely available.

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