Hadrian's Wall
- a Roman defensive wall across northern England, stretching from the Solway Firth in the west to the mouth of the River Tyne in the east (about 120 km, 74 miles). It was begun in AD 122, after the emperor Hadrian's visit, to defend the province of Britain against invasions by tribes from the north.哈德良长城（穿越英格兰北部的罗马防御屏障, 西起索尔威湾, 东至泰恩河口, 长约120公里, 即74英里; 为保护不列颠省不受北方部落的侵犯, 哈德良巡行该地后于公元122年起建）。