The Fourth Crusade and decline of Constantinople devastated the trade integral to Rus wealth and power, while Teutonic crusaders threatened northern territories.

当日耳曼的十字军逐渐抵达北部时随着第四次十字军战争和君士坦丁堡的沦陷，基辅罗斯因贸易而积攒的财富和权力慢慢沦陷。

Also, the fourth crusade pretty much doomed the Byzantine Empire, which never really recovered.

此外，第四次十字军东征几乎注定了拜占庭帝国从未真正恢复过来。

Remember that when the crusaders needed ships for their crazy Fourth Crusade, they headed to Venice, because the Venetians were famous for their ships, including merchant ships like the galley and the cog.

请记住，当十字军为他们疯狂的第四次十字军东征需要船只时，他们前往威尼斯， 因为威尼斯人以他们的船只而闻名， 包括厨房和平底船等商船。