| 1 | This type of weapon requires special maintenance and care. | |
| 2 | Maintaining the car is a necessary measure to extend its service life. | |
| 3 | Doing maintenance work can greatly reduce the failure rate of machines. | |
| 4 | Taking care of the skin is not just a women's need, men also need to take care of it. | |
| 5 | She likes to invest a lot of time and money in skin care. |