 |
| English | Chinese |
| air quality maintenance area | 空气质量保持区 |
| Health Maintenance Organization | 健康维护组织 |
| maintenance of environment No definition needed | 环境维护 (无需定义。) |
| maintenance prevention | 维修保养 |
| road maintenance The care or upkeep of streets, highways and other routes, including improvements in alignment, widening and markings, and work involving buried cables, water mains or gas mains | 道路维护 (马路、高速路和其它路的保养，包括在路线的改进、扩建和标记，并且工作涉及埋电缆、水管或气管。) |