hello I am so glad to answer for you
1) if you maintain something, you make it continue
= I've tried to maintain contact with my friends.
2) if you maintain a machine or a building, you keep them in good condition
= A big house is very expensive to maintain.
1) if you remain in a place, you do not move from that place
= she remained at home, waiting for his phone call.
2) something that remains, it continues
= other dangers still remain
So as you can see, they are absolutely diffferent, and in my view learning
English should be in English, and it doesn't work in Chinese
2010-04-29 23:57:13 補充：
and I am wondering what the difference between 維持 and 保持???
I have lived in the UK since was a boy