名詞 external:

1. outward features

形容詞 external:

1. happening or arising or located outside or beyond some limits or especially surface
2. coming from the outside
   同義詞：extraneous, outside
3. from or between other countries
   同義詞：international, outside
4. purely outward or superficial- A.R.Gurney,Jr.

1. A circuit that pulls information from the control store memory based upon external events or conditions.
   依據(jù)外部事件或條件將信息從控制存儲器中取出的一種線路。
2. All his injuries are external.
   他受的傷都是外傷。
3. This news program only covers external events.
   這一新聞節(jié)目只報道國外消息。

ex.ter.nal

adj.Abbr. ext.（形容詞）縮寫 ext.
Relating to, existing on, or connected with the outside or an outer part; exterior.
外面的，外在的：與外面或外部有關(guān)的，出現(xiàn)在外面或外部的，與外面或外部有聯(lián)系的；外部的
Suitable for application to the outside:
外用的：適于外面使用的：
例句：
external paints.
外用涂料

Existing independently of the mind.
客觀的，物質(zhì)的：與精神無關(guān)的
Acting or coming from the outside:
外界的：存在或來自于外界或外面的：
例句：
external pressures.
外界的壓力

Of or relating chiefly to outward appearance; superficial:
外表的，外觀的：外表的，主要和外表有關(guān)的；表面的：
例句：
.An internal sense of righteousness dwindles into an external concern for reputation.(A.R. Gurney, Jr.)
.內(nèi)心的正義感變成對外在名譽的關(guān)心.(小A.R.格尼)

Of or relating to foreign affairs or foreign countries:
外國的，國際的：外國的事務或外國的，與其有關(guān)的：
例句：
the country`s minister of external affairs.
該國的外交部長

n.（名詞）
An exterior part or surface.
外部：外部或外在的表面
externals
externals
Outer circumstances.
外部環(huán)境
Outward appearances:
外觀：
例句：
was charming as far as the externals went.
就外表來說是迷人的

來源：
Middle English
中古英語
from Latin externus [outward]
源自 拉丁語 externus [向外的]
from exter * see eghs
源自 exter *參見 eghs

【引伸】
exter.nally
adv.（副詞）