A narrow strait separating European and Asian Turkey and joining the Black Sea with the Sea of Marmara. It has been an important trade route since ancient times.

• 博斯普鲁斯将欧洲和亚洲土耳其相分离并将黑海与马尔马拉海相连接的狭长海峡，自古时起便是重要的贸易通道。