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自然 · 历史

S25 E7 Treasures of a Sunken City

本集简介

Divers search the seafloor for one of the seven wonders of the ancient world: the Lighthouse of Alexandria.

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1997/11/12 S25 E6

Engineers solve a unique set of problems in safety, aesthetics, and cost as they build a bridge over the Mississippi River.

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1997/11/25 S25 E8

Scientists take you inside a snow slide to unlock its deadly secrets.

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