The satellite USES radar to measure its altitude above the ice sheet.
卫星用雷达测定卫星从冰层顶部算起的高度。
In this area, the radar is detecting thick subsurface ice in many locations.
在这块区域的许多位置，雷达都探测到了厚实的地下冰河。
Radar probing has shown that the Antarctic ice in places is more than 15,000 feet thick.
雷达探测结果表明南极有些地方的冰层厚达1.5万英尺以上。
Radar probing has shown that the Antarctic ice in places is more than 15,000 feet thick.
雷达探测结果表明南极有些地方的冰层厚达1.5万英尺以上。
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