/ɪn'tɜ:nl; ɪn`tɝnl/
adj
1 of or on the inside 内部的; 在内部的
*the internal workings of a machine 机器内部的运转
* holding an internal inquiry (ie within an organization) to find out who is responsible 进行内部调查, 找出应对此事承担责任的人
* (mathematics 数) an internal angle, eg one of the three inside a triangle 内角. Cf 参看 external.
2 (medical 医) of the inside of the body 体内的
*internal organs 内脏
* internal medicine, ie medical study of the interior of the body 内科学
* (infml 口) She's been having some internal problems. 她一直有些内科疾病.
3 of the mind, but not outwardly expressed 内心的; 精神的
*wrestling with internal doubts 疑虑重重心神不定.
4 (of examinations, etc) set and marked within a school, university, college, etc （指考试等）校内的
*an internal examiner, ie one who marks papers from his own college, etc 校内主考人.
5 of political, economic, etc affairs within a country, rather than abroad; domestic 国内的; 内政的
*internal trade, revenue, etc 国内贸易、税收等.
6 (derived from) within the thing itself （得自）本身的
*a theory which lacks internal consistency, ie of which the parts do not fit together 缺乏内部一致性的理论
* internal evidence, eg of when a book was written 内在证据（如从书中可知悉其写作时间）.

adj [usually before noun]
[Date: 1400-1500; Language: Medieval Latin;Origin: internalis, from Latin internus 'inward, inside']
within a particular country
= domestic
≠ external
　We have no interest in interfering in the internal affairs of other countries.
　the threat to internal security
　internal markets
within a company or organization rather than outside it
≠ external
　There's to be an internal inquiry into the whole affair.
　the internal mail
inside your body
≠ external
internal organs/injuries
inside something rather than outside
≠ external
　They've knocked down a couple of internal walls.
existing in your mind
= inner
　internal doubts
>internallyadv
　The matter will be dealt with internally.
　This medicine must not be taken internally.