a.

1. 外面的，外部的
2. 外界的，外来的
   They did it in response to external pressures.

   他们这么做是迫于外界的压力。

3. 表面的；非本质的
   She sets great store by external politeness.

   她很注重表面的虚礼。

4. 外部世界的，物质（世界）的
5. 【药】外用的
   This medicine is for external use only.

   这种药仅限于外用。

6. 对外的；外国的
   Our external trade has expanded during recent years.

   我国的对外贸易近几年来有所发展。

n.

1. 外形，外观；形式；外表状况[P]
   It is unwise to judge people by externals.

   以貌取人是不明智的。

adj.

1. belonging to, situated on, or forming the outside.
2. coming or derived from a source outside the subject affected.
   ▸coming from or relating to a country or institution other than the main subject:

   a department of external affairs.
3. for or concerning students registered with and taking the examinations of a university but not resident there.

n.