“法语系”应该翻译为French Department,还是Department of French,为什么?

“法语系”应该翻译为French Department,还是Department of French,为什么? Anybody know the French translation for "Department"?Please department 求翻译 Inflammation of department of gynaecology 翻译：department of health and mental hygiene state Department of Archaeology 怎么翻译? a sales department还是a sale department? head of department是什么意思 department of journalism是什么意思 French French, 翻译英语department