external

external
adjective
  1. belonging to or forming the outer surface or structure of something
    外面的；外部的
    the external walls.
    外墙。
    ■relating to or denoting a medicine or similar substance for use on the outside of the body
    （药等）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，教堂是外来权威的象征。
    ■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.
    防御和外交责任。
    ■outside the conscious subject
    外部世界的
    the child learns to form conceptions of the external world.
    孩子学着形成对外部世界的看法。
    ■for or concerning students registered with and taking the examinations of a university but not resident there
    （在某一大学获准注册并参加考试但不住在校内的）校外生的
    external degrees.
    校外生学位。
    ■(Computing)(of hardware) not contained in the main computer; peripheral
    (计算机)（硬件）外围的
    ■(Computing)(of storage) using a disk or tape drive rather than the main memory
    (计算机)（存储）使用磁盘驱动器的
noun
  1. (externals)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.
    这地方具有所有合适的外部特征，例如烟囱爬满了常春藤、窗户开满了茉莉花。
    ■features which are only superficial; inessentials
    表面特征；可有可无的东西
派生
externally
adverb
语源
  1. late Middle English: from medieval Latin, from Latin exter 'outer'
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