How to Use "maintenance" with Example Sentences

1. The company makes 75 % of its revenues on swimming-pool maintenance and repair . "
2. Aside from the costs of installation and maintenance , wang notes that bandwidth in china is extremely expensive .
3. Dams need better maintenance and desilting .
4. That means a shorter , lifespan and heavier maintenance .
5. Investigator said faulty maintenance was partly to blame .