沒有GPS就不過了？　　沒有GPS時直升機上天麽？　　　無法準確定位＝要撞山墜毀？　　

來源: carljinping 於 2014-11-07 00:23:46 [舊帖] [給我悄悄話] 本文已被閱讀：次

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