He swam the Strait of Dover.

他游过多佛海峡.

It takes about seven hours across the Strait of Dover.

横渡多佛海峡需要7个小时左右.

A promontory of northern France extending into the Strait of Dover near Calais. It is the nearest point to the island of Great Britain.

法国北部的海峡，靠近加来伸入多佛海峡。为最靠近大不列颠岛的地点。