conservation
词形变化：
同义词：
preserve | save | keep | protect | store | jam | marmalade | safeguard | go easy on | be careful with | maintain | guard | economise | preserves | keep up | conserves | husband | economize | reserve | retain | withhold |
反义词：
waste |
词义辨析：
同义:
n.保存, 维护, 保护
preservation
preserving
saving
reservation
protection
keeping
safe-keeping
care
charge
custody
maintenance
upkeep
support
safe-guarding
management
supervision
environmentalism
husbandry
同义参见:
abstinence
thrift