protectionistn.保护贸易论者adj.保护贸易论的protectionn.保护；防卫Protection cultivation保护地栽培protection performance保护性能protection of executee被执行人保护protection and control保护与控制protection disposition保护配置protection of coatings涂层防护性能Protection and utility保护与开发protection at the back背面保护protection requirement保护要求protection information保护信息