Guardon.瓜尔多guardv.看守；守卫；保卫；提防n.警戒；哨兵；防护装置；警卫；【体】后卫Guardrail system护栏系统Guarding against防范Guardia Nacional国民警卫队guard rail clamp护轨夹guarded commands带哨命令guard a prisoner[法] 看守犯人Guardrail height护栏高guards van valve守车制动阀guard rail brace护轨撑guarded drainage防排水