external/ekˈstɜːn(ə)l/
adj.1. 外部的；外面的the external walls of a house一座房屋的外墙
External causes become operative through internal causes.外因通过内因而起作用。
This medicine is for external use only, not for drinking.此药只供外用，不可内服。
2. 外国的；对外的external trade国外贸易
This local newspaper doesn't pay much attention to external affairs.这家地方报纸不太注重国外新闻。