单词：harvester-thresher
收割打谷康拜因;割脱两用机
单词：harvester-thresher 相关文章
Power Your Laptop by Taking a Walk Scientists at the University of Wisconsin-Madison have developed a technology that turns human motion into electricity. In this week's journal Nature Communications, they describe how to power a cell phone or other
发表于:2019-01-14 / 阅读(146) / 评论(0)
VOA标准英语2011年(八月)
VOA标准英语2011年(八月)
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(132) / 评论(0)
VOA标准英语2010年(六)月
VOA标准英语2010年(六)月