1
- belonging to or forming the outer surface or structure of something外面的; 外部的; 外表的; 表面的：
the external walls.
外墙。
1.1
- relating to or denoting a medicine or similar substance for use on the outside of the body（药品等类似物质）外用的：
for external application only.
仅供外用。
2
- coming or derived from a source outside the subject affected外来的; 外界的：
for many people the church was a symbol of external authority.
对许多人来讲, 教堂是外来权力的象征。
2.1
- coming from or relating to a country or institution other than the main subject对外的; 与外国有关的：
responsibility for defence and external affairs.
防务和外交事务的责任。
2.2
- outside the conscious subject客观的, 外部世界的：
the child learns to form conceptions of the external world.
孩子学着对外部世界形成概念。
2.3
- for or concerning students registered with and taking the examinations of a university but not resident there（在某一大学注册并参加考试但不住校的）校外生的：
external degrees.
校外生学位。
2.4
- Computing (of hardware) not contained in the main computer; peripheral【计算机】（硬件）外部的。
2.5
- Computing (of storage) using a disk or tape drive rather than the main memory【计算机】（存储）使用磁盘（或磁带）驱动器的。
noun
1externals
- the outward features of something外表; 外部特征：
the place has all the appropriate externals, such as chimneys choked with ivy and windows with jasmine.
那地方具有所有相称的外部特征, 例如： 爬满常春藤的烟囱以及外面开满茉莉花的窗户。
1.1
- features which are only superficial; inessentials表面特征; 可有可无的东西。
派生词
externally
adverb词源
late Middle English: from medieval Latin, from Latin exter 'outer'.