outer [ˈaʊtə(r)]

以下由轻松背单词网站提供

adj.外部的；外面的

at a greater distance from the centre

The outer door was wide open but the inner one was locked. 外面的门大开着而里面的门锁着。
The outer walls of the house were made of brick. 这座房子的外墙是砖的。