英 [meɪnˈteɪn] 美 [meɪnˈteɪn]
v. 保持，维持；维修，保养；断言，主张；赡养，抚养；<旧>支持，维护
[ 第三人称单数 maintains 现在分词 maintaining 过去式 maintained 过去分词 maintained ][1]
柯林斯英汉双解大词典
maintain /meɪnˈteɪn/ CET4 TEM4 ( maintaining, maintained, maintains )
1.V-T If you maintain something, you continue to have it, and do not let it stop or grow weaker. 保持
2.V-T If you say that someone maintains that something is true, you mean that they have stated their opinion strongly but not everyone agrees with them or believes them. 坚持说; 坚持认为
3.V-T If you maintain something at a particular rate or level, you keep it at that rate or level. 维持
4.V-T If you maintain a road, building, vehicle, or machine, you keep it in good condition by regularly checking it and repairing it when necessary. 维修; 保养
5.V-T If you maintain someone, you provide them with money and other things that they need. 供养[1]