maintain
/meɪnˈteɪn; men`ten/ v
1 [Tn, Tn.pr]
~ sth (with sth) cause sth to continue; keep sth in existence at the same level, standard, etc 保持或维持某事物
maintain friendly relations, contacts, etc (with sb) （与某人）保持友好关系、 接触等
enough food to maintain one's strength 足以维持体力的食物
maintain law and order 维持法治
maintain prices, ie prevent them falling 维持住物价（防止跌落）
maintain one's rights 保留自己的权利
Maintain your speed at 60 mph. 你要保持每小时60英里的速度.
The improvement in his health is being maintained. 他的健康状况仍在继续好转.
2 [Tn] support (sb) financially 在财务上支持（某人）; 赡养; 扶养
earn enough to maintain a family in comfort 挣的钱足以维持一家人过舒适的生活
This school is maintained by a charity. 该校由一慈善机构资助.
She maintains two sons at university. 她供两个儿子上大学.
3 [Tn] keep (sth) in good condition or working order 保养, 维修（某物）
maintain the roads, a house, a car, etc 保养道路、 房子、 汽车等
Engineers maintain the turbines. 机修工维修涡轮机.
a well-maintained house 保养良好的房子.
4 [Tn, Tf] assert (sth) as true 断言（某事）属实; 坚持
maintain one's innocence 坚持自己无辜
maintain that one is innocent of a charge 对某项指控坚称无罪.