单词：subgrade of special soil
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This is the VOA Special English Development Report. This week in our report we are going to talk about adobe. No, not the information technology company in California, Adobe Systems. We mean the traditional building product made of soil and other ma
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This is the VOA Special English Agriculture Report. Hogs at an Ohio farm Research shows that waste from pigs that are fed a special kind of corn may help a farmer's crops. And it also may help the environment. Any farmer who raises swine knows that
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