相关单词同义词conservation, hold, retention, reservation, 近义词 conservation 保存, protection 保护, maintenance 维修, defence 防御, defense 防卫, conservancy 保护, salvation 拯救, continuation 继续, security 安全, perpetuation 永存, keeping 一致, upholding 动词uphold的现在进..., support 支持, saving 节约临近词Pres, Presler相似词presenteeism, presenter, presentiment, presently, preservation order, preservationist, preservative, preserve, 返回 preservation