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ADJ
外部的;外面的;外來的
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.
例句
...a much reduced heat loss through external walls.
大幅降低的外墻熱損失
...internal and external allergic reactions.
內外變態反應
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ADJ
對外的;與外國有關的
External means involving or intended for foreign countries.
例句
...the commissioner for external affairs.
對外事務專員
...Jamaica's external debt.
牙買加的外債
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ADJ
外界的;外部的
External means happening or existing in the world in general and affecting you in some way.
例句
...a reaction to external events...
對外界事件的反應
Such events occur only when the external conditions are favorable.
這種事情只有在外部條件有利時才會發生。
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ADJ
（專家等）外來的，外聘的
External experts, for example external examiners, come into an organization from outside in order to do a particular job fairly and impartially, or to check that a particular job was done properly.
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PHRASE
（藥物）外用的
If medicine is for external use, it is intended to be used only on the outside of your body, and not to be eaten or drunk.