1. 外面的，外部的　on, of, or for the outside
2. 外观的，表面的　that can be seen but is not natural or real
3. 外国的　foreign

　The external 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 external layer of skin is called the epidermis.　皮肤的外层叫表皮。
　This medicine is for external use, not to swallow.　这药外用，不可口服。
　The external features of the building are very attractive.　这座建筑物的外观是很吸引人的。
　He is actually very shy, despite external appearances.　他实际上很害羞，尽管从外表看他并非这样。
　The internal affairs of any state, whether it's big or small, do not allow of external interference.　国家虽有大小，但它的内政是不容许外国干涉的。
　That is an external reason only.　那只是客观原因。
　The engine is external to the boat.　发动机在船舷之外。

 ♣ external, exterior
　参见exterior条。
 ♣ external, outer
　这两个词都有“外部的，外面的”意思。external指一物体外面能看得见的部分；outer指一物体的外围、外面，有“远离中心”的意思。

　［同义词］ alien, apparent, exterior, outer
　［反义词］ internal