标签：thresher 相关文章

VOA标准英语2010年-A Focus on Human Needs at New York Des

Theres a tiny car that turns in a perfect circle, and stands up on two wheels for parking. Solar roofing tiles to collect energy for home needs. A grain thresher thats made of bicycle parts. These are some of the creations at the Smithsonian Cooper-H

发表于:2019-02-12 / 阅读(67) / 评论(0) 分类 VOA标准英语2010年(六)月
最新学习文章
热门学习文章