单词：gearwheels
(gearwheel 的复数) n. 齿轮
plural of gearwheel
单词：gearwheels 相关文章
By Claudia Blume Hong Kong 18 March 2007 Buzzing Hong Kong is better known for keeping lights on all night and the Wind turbine air conditioner running full blast, not saving energy. But engineers in the city have introduced an innovative wind energ
发表于:2019-01-05 / 阅读(176) / 评论(0)
2007年VOA标准英语（三月）
2007年VOA标准英语（三月）