外循环

外的英语翻译：

besides; in addition; not closely related; other; outer; outside; unofficial
【医】 ec-; ecto-; exo-; extra-; xeno-

循环的英语翻译：

cycle; recur; circle; rotate; circulation; repetition; revolution
【计】 DO-loop; for-loop; loop; unwinding
【化】 recirculate
【医】 circuIation; cycle
【经】 cycle; revolving; rotation