From western Turkey to the eastern tip of Russia, the largest continent spans nearly half the world.

从土耳其西部到俄罗斯的东端，这最大的大陆几乎跨越了半个世界。

As you can imagine, this agricultural period covers a large span of time from approximately 10,000 BC to around 1760 AD.

你可以想象，这一农业时期的跨度很大，大约从公元前 10000 年到公元 1760 年。

The Golden Gate Bridge, well it opened in 1937, and for a few years it was the world's largest suspension bridge span.

金门大桥，它于 1937 年开通，几年来它是世界上最大的悬索桥跨度。