他们阅读历史记录，谈论武器和侦察工具。
They read the histories and talk about the weapons and spy tools.
无人机将成为侦察卫星、有人驾驶侦察机的重要补充与增强手段，成为未来战场上广泛应用的一种侦察工具。
UAV will be the supplemental and strengthening way for the satellite and manned aircraft in the reconnaissance missions.
他的团队使用火星侦察影像频谱仪和其他工具登陆火星侦查轨道，观察火星上因太阳反射而产生的颜色。
His team used the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) and other instruments on board NASA's Mars Reconnaissance Orbiter to look at colors in reflected sunlight.
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