本期内容：

British and German media obtained information, purportedly including names, telephone numbers and relatives'details, of 22,000 members of Islamic state from 50 countries. Sky News reported that the data came from a memory stick stolen by a disillusioned IS fighter. A retired British counter-terrorism chief said the cache could be the “biggest breakthrough in years”.

词义解析:

Purportedly: 据称
Memory stick: 优盘
Disillusioned：失望的
Cache：内存条
Breakthrough: 突破