标签：地震 相关文章
By Steve Herman Tokyo 05 August 2006 The world's first earthquake early warning system has begun operating in Japan. The government-developed system takes advantage of the precious seconds between the first indication of a powerful tremor and the ar
发表于:2019-02-07 / 阅读(160) / 评论(0)
2006年VOA标准英语（八月）
2006年VOA标准英语（八月）