厂区外

【化】 off-site

厂的英语翻译：

factory; mill; plant; works; yard
【医】 station

区的英语翻译：

area; borough; classify; distinguish; district; region; section
【计】 region
【医】 area; belt; field; quarter; regio; region; zona; zone

外的英语翻译：

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