n.  堡垒，城堡

n.  兵营；军营；营地

• fortify

  v.  筑防御工事于；筑堡于

  v.  激励，鼓舞；加强 〔态度或感觉〕≈ strengthen

  v. 〔加维生素〕强化〔食品或饮料〕；提高〔食品或饮料〕的营养价值 

• hold the fort  代为负责（某事）；代为照看（某人）

• foods fortified with vitamin B  添加维生素B的食品

• Why not have a day off? I'll hold the fort for you. 干吗不休息一天？我来为你代管。 

• The town was heavily fortified. 该镇设有重防。

• Her position was fortified by election successes and economic recovery. 她的地位因为选举获胜及经济复苏而得到巩固。

• The news merely fortified their determination. 这消息只是增强了他们的决心。

BrE /əˌbriːviˈeɪʃn/