Definition: the work needed to keep a road, building, machine, etc. in good condition Level: B2
老房子需要太多的维护工作。
Old houses require too much ___maintenance.
高昂的汽车保养费用对许多家庭来说是个负担。
The high cost of car ___maintenance is a burden for many families.
定期保养这台机器能确保其最佳性能。
Regular ___maintenance of this machine ensures its optimal performance.
