guardsn.警卫；狱吏；看守；护卫队名词guard的复数形式.guardv.看守；守卫；保卫；提防n.警戒；哨兵；防护装置；警卫；【体】后卫guarded plate method保护平板法guard ring electrode护环电极guard against Russia防俄guard against danger防止危险guard-ring detector保护环探测器guard ring transistor保护环晶体管guarding arrangements防护措施guard against disease预防疾病guard against a flood防洪guarded communication受保护的通信