外面的,外部的 on, of, or for the outside
外观的,表面的 that can be seen but is not natural or real
外国的 foreign
同义词
a. extraneous，international，outside
反义词
a. internal
词汇辨析
external，exterior，outer，outside，outward
这些形容词均可表示 外部的 之意
external 指与其他物体分离或没有关系的外部，不涉及内容，只说明全然是外部的
exterior 强调位于事物的外表以上，但仍是该事物的一部分，较正式
outer 主要提离开中心或内部较远的，或指比较在外的
outside 指超出某种界限之外的
outward 多指空间关系或方向上向外的
参考例句
1. The peace of God is internal, not external.
上帝的和平是内心的，不是外部的
2. Why should it depend for recovery on external demand?
其经济复苏为何要依赖于外部需求呢?
3. Consider the impact of a project on internal and external customers.
考虑一下某个项目对内部和外部客户的影响
例句
1.ADJ External is used to indicate that something is on the outside of a surface or body, or that it exists, happens, or comes from outside. 外部的; 外来的; 外在的
例：...a much reduced heat loss through external walls.
透过外墙的大大减少的热量损失
2.externally ADV 外部地; 外来地; 外在地
例：Vitamins can be applied externally to the skin.
维他命可以外用于皮肤上
3.ADJ External means involving or intended for foreign countries. 涉外的; 对外的
例：...the commissioner for external affairs.
外事专员
例：...Jamaicas external debt.
牙买加的外债
4.externally ADV 涉外地; 对外地
例：...protecting the value of the dollar both internally and externally.
保护美元在国内外的价值
5.ADJ External means happening or existing in the world in general and affecting you in some way. 外界的
例：Such events occur only when the external conditions are favourable.
此类事件只有当外界条件有利时才会发生
常见用法
用作形容词
This news program only covers external events.
这一资讯节目只报道国外消息
The external sector performance also improved significantly during the period.
在此期间,我国的涉外经济成绩斐然
This force takes two forms, one internal and one external.
这个权力有两种形式:一种是对内的,一种是对外的
All his injuries are external.
他受的伤都是外伤
用作名词
The external features of the building are very attractive.
这座建筑物的外观是很吸引人的
These load cells are specially designed with small external dimensions.
这些测力元件精心设计了小外观尺寸
He is just listening in external of that room.
他正在那房间的外面留神听着