1 to make sth continue at the same level, standard, etc 维持;保持:
We need to maintain the quality of our goods but not increase the price.我们要保持货品的质量但又不加价。to maintain law and order维持法律和秩序
2 to keep sth in good condition by checking and repairing it regularly 保养;维修:
to maintain a road/building/machine保养道路╱建筑╱机器The house is large and expensive to maintain.这房子很大,维修要花很多钱。
3 to keep saying that sth is true even when others disagree or do not believe it 坚称;断言:
I still maintain that I was right to sack him.我依然认为,我开除他没错儿。She has always maintained her innocence.她一直坚称自己清白。
4 to support sb with your own money 供养;赡养;扶养:
He has to maintain two children from his previous marriage.他要扶养上一段婚姻的两名子女。