发布于:2025-07-06 06:16浏览量:138文/优校网
1.保存,维持(健康),保守;保护;保护森林[河道](等)
2.【物】守恒,不灭
1.the management of land and water in ways that prevent it from being damaged or destroyed
2.the careful use of energy, water, and other resources, so that they are not wasted or lost
3.the preservation of buildings or objects of historical importance