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[经济学人双语拓展] 经济学人双语拓展(MP3+文本) 第4期:太空战,未来战争的下一个前沿
The 1,300 active satellites above the Earth provide a wide array of services, some of which are vital for emergency response and for the military.2019-06-10 编辑：Melody
Severity: Notice
Message: Memcache::connect(): Server 127.0.0.1 (tcp 11211, udp 0) failed with: Connection refused (111)
Filename: libraries/Cache_file.php
Line Number: 28
Severity: Warning
Message: Memcache::connect(): Can't connect to 127.0.0.1:11211, Connection refused (111)
Filename: libraries/Cache_file.php
Line Number: 28
2019-06-10 编辑：Melody
