ranger什么意思

　　例句：

　　When one Ranger fell, another would take his place.

　　一個突擊隊員倒下了，另一個又沖上來。

　　Accuracy Analysis of Precise Ranger in Consideration of System Error

　　顧及系統誤差的精密測距儀之精度分析

　　Practical Precise Ranger Based on the Laser with Two Longitudinal Modes

　　實用雙縱模激光精密測距儀