outer
/ˈautə(r); `aʊtɚ/ adj[attrib 作定语]
(a) of or for the outside 外面的; 外部的; 为外边的
the outer layer of wallpaper 壁纸的外层
outer garments 外衣 * the outer walls of a house 房子的外墙.
(b) farther from the inside or centre 远离内部或中心的: the outer hall 外厅
the outer suburbs of the city 城市的远郊. Cf 参看 inner.