单词：caulking calking
填隙
单词：caulking calking 相关文章
Youth Group in Nairobi Illuminates Homes, Schools A youth group in one of Nairobi's many teeming slums has found a brilliant way to light up dark houses. Drawing upon an innovation from Brazil, the young people have installed so-called water bulbs in
发表于:2018-12-08 / 阅读(60) / 评论(0)
VOA标准英语2011年(十二月)
VOA标准英语2011年(十二月)
By David McAlary Washington 12 July 2006 Astronaut Mike Fossum (on arm)installs the International Space Station's railcar-like mobile transporter U.S. space shuttle astronauts are on their third spacewalk since Saturday, this time to practice method
发表于:2019-02-03 / 阅读(182) / 评论(0)
2006年VOA标准英语（七月）
2006年VOA标准英语（七月）