protectionistn.保护贸易论者adj.保护贸易论的protectionn.保护；防卫protection-mechanism保护机制Protection of Software软件保护protection switch time保护倒换时间protection on the spotph.protection and harness保护治理Protection against Gas毒气防护protection dead-zone保护死区protection and setting配置与整定protection of wildlife野生动物保护protection of property物权保护