The exhibition of parasols, of shield-like roundness, threw forth metallic reflections.

遮阳伞的展示， 盾牌般的圆度， 投射出金属反射。

Synthetic aperture radar (SAR) satellites, which send out radar pulses rather than relying on ambient light, would pick up the metallic reflections of heightened vehicle activity.

合成孔径雷达（SAR）卫星发出雷达脉冲而不是依赖环境光，它会捕捉到车辆活动增强时产生的金属反射。