conservation
n.保存；保护；避免浪费；对自然环境的保护
网络解释.保护；守恒；洗涤说明；保存
词形变化:
复数：conservations
派生词: conservational
n.1.保存,维护,保护释义下的同义词
charge safe-guarding upkeep care custody preservation management preserving husbandry supervision protection environmentalism sa
双语例句
1. 1 . In time these new excavations will require conservation .
这些刚发掘出来的物品需要及时保护。
来自柯林斯例句