Currently, the European Space Agency (Esa) has two lidar (light detection and ranging) missions of its own in preparation.

目前，欧洲空间局(ESA)自身有两个激光雷达(光探测和测距)任务正在准备中。

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Like its Cousins radar and sonar, lidar (light detection and ranging), works by broadcasting electromagnetic waves towards a target and then building up a picture from the reflection.

与雷达和声纳技术相似，激光雷达(光探测和测距)的工作原理是通过向目标发射电磁波然后根据反射波构建图像。

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Carbon composites are extremely strong and light. They are already used in products ranging from tennis racquets to aircraft wings.

复合碳材料质轻而坚韧，已经在从网球拍到飞机机翼的广大范围内得到应用。

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They include BRABUS Monoblock light-alloy wheels with diameters ranging from 19 to 21 inches.

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James played most of the instruments on "Regions of Light" and broadens his already wide-ranging sound.

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Each of the new models features a unique, innovative design and a range of improved imaging technologies that make is easier than ever to capture the decisive action in all types of shooting environments ranging from low-light to outdoor scenes, underwater adventures and everything in between.

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