齿轮齿根啮合印痕

朝鲜再次发射短程导弹

发表于:2018-12-08 / 阅读(80) / 评论(0) 分类 2016年VOA慢速英语(三)月

SAMPLE DIALOG A: Its time the government took stricter standards control on cosmetic products. The low quality cosmetics have caused various skin diseases among users. B: Yeah, the producers use harmful ingredients to lower costs and add profits. A:

发表于:2018-12-29 / 阅读(46) / 评论(0) 分类 新视野大学英语:视听说教程 2

US President Barack Obama, left, and his Russian counterpart Dmitry Medvedev, right, shake hands at a press conference after signing the newly completed New START treaty reducing long-range nuclear weapons at the Prague Castle, 8 Apr 2010 The New Str

发表于:2019-01-13 / 阅读(57) / 评论(0) 分类 VOA标准英语2010年(八)月

The United States and Russia continue sparring over a Central European missile defense system, as Secretary of State Condoleezza Rice says America is committed to protecting its allies from a possible Iranian missile attack, and her Russian counterp

发表于:2019-02-11 / 阅读(74) / 评论(0) 分类 VOA标准英语2008年(七月)

A third round of talks over an embattled joint industrial zone between North and South Korea has produced no progress. The North apparently launched several short range missiles into the ocean even as South Korean delegates were making their journey

发表于:2019-02-12 / 阅读(55) / 评论(0) 分类 VOA标准英语2009年(七月)

Glossary for Telecomunications This glossary helps explain some of the acronyms and technical phrases Bluetooth A short-range wireless technology designed to allow connection of portable devices in a wire-free manner. For example connection of a wire

发表于:2019-02-18 / 阅读(49) / 评论(0) 分类 实用英语