单词：CAV system
定风量系统
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This is the VOA Special English Agriculture Report. A locavore is someone who eats foods produced locally. Locavores usually define local as within one hundred sixty kilometers. This new term grew out of a reaction to the long distances that food no
发表于:2018-12-15 / 阅读(265) / 评论(0)
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THIS IS AMERICA - Another World, Underground: Carlsbad Caverns National Park in New Mexico BOB DOUGHTY: Welcome to THIS IS AMERICA in VOA Special English. I'm Bob Doughty. BARBARA KLEIN: And I'm Barbara Klein. This week on our program, we explore a U
发表于:2018-12-16 / 阅读(269) / 评论(0)
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