单词：under-pinnings
n. 基础；[矿业] 支柱（underpinning的复数形式）
单词：under-pinnings 相关文章
By David Byrd Rio de Janeiro 13 July 2007 The 15th Pan American Games, a multi-sport Olympic style competition for the Western Hemisphere, open Friday in Rio de Janeiro, Brazil. As VOA's David Byrd reports, the games are part of Rio's plan to bid for
发表于:2019-02-04 / 阅读(191) / 评论(0)
2007年VOA标准英语（七月）
2007年VOA标准英语（七月）