VOA慢速英语2013.01.23
[audio]http://sound.yywz123.com/tingbbs/voa/voa20130123.mp3[/audio]The tests will show how well the plane navigates and follows the orders it receives from the ground.这次测试将展示这架飞机导航和执行其接收到的地面命令有多成功.
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