A wooden artefact found on the step pyramid at Saqqara looks uncannily like a modern glider.

"在塞加拉的梯形金字塔上，人们发现了一个木制的手工制品，这个手工制品与一种现代滑翔机惊人地相似。

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With that computational power and the ability to tirelessly swim across vast oceans, the Wave Glider SV3 represents a big step forward in the state-of-the-art of unmanned monitoring and exploration.

ENGADGET: Wave Glider sea robot gets a new version, replete with more power and gear