maintain的名詞形式是maintenance。
作名詞時的意思有：維護；保養；維持；保持；（依法應負擔的）生活費；撫養費。maintain也可以用作動詞，意思有：維持；維修；保養；保持；堅持；固執己見。
例句：
1、She maintained a dignified silence.她壹言不發，以保持尊嚴。
2、The government struggled to maintain law and order.政府努力維持治安。
3、The army has been sent in to maintain order in the capital.軍隊被調進首都維持治安。
4、We aim to maintain high standards of customer care.我們的宗旨是始終以高標準為顧客服務。
5、We shall maintain our focus on the needs of the customer.我們將繼續重點關註顧客的需要。
6、The two countries have always maintained close relations.這兩個國家壹直保持著密切關系。
7、The house is large and difficult to maintain.房子很大，難以養護。
8、They have maintained a close association with a college in the US.他們和美國壹所學院保持了密切聯系。
9、Her income was barely enough to maintain one child,let alone three.她的收入養活壹個孩子幾乎都不夠，更不用說三個了。