单词：pinning up
na. 钉住；(用针)扣住；【建】托换…的基础；加固
pinning up的用法和样例：
例句
- They have had the tunnel shored up with concrete.他们已经叫人用水泥把坑道加固。
- He roped up his trunks for additional sccurity.他把他的大衣箱用绳捆扎加固。
单词：pinning up 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(150) / 评论(0)
2007年VOA标准英语（七月）
2007年VOA标准英语（七月）