A more thorough explanation:

Maintain is a verb that means:

1. To continue something.
2. To keep possession of something.
3. To argue for or support a position or opinion.
4. To take care of something for operation, productivity, or appearance.
5. To financially support someone, especially by paying alimony.

• She maintained her exercise routine even during the busy season at work.
• The company maintained ownership of the building despite the economic downturn.
• He maintained that the new policy would be detrimental to the company's success.
• The landlord maintained the property by fixing the leaky faucet and repainting the walls.
• After the divorce, he was required to maintain his ex-wife by paying alimony.

These examples illustrate the different ways in which the verb "maintain" can be used. In the first example, "maintain" means to continue doing something, in this case, an exercise routine. In the second example, "maintain" means to keep possession of something, in this case, a building. In the third example, "maintain" means to argue for or support a position or opinion. In the fourth example, "maintain" means to take care of something for operation, productivity, or appearance. In the fifth example, "maintain" means to financially support someone, especially by paying alimony.