相关单词近义词 underground 地下的, furtively 偷偷地, surreptitiously 偷偷摸摸地, silently 沉默地, quietly 安静地, cautiously 慎重地, slyly 狡猾的, craftily 狡猾地, secretly 秘密地, covertly 偷偷摸摸地临近词stealth, stealth weapon, Stealth radome, stealth bomber, stealth target, stealth malware, stealth fighter, stealth coating, stealth missile, stealth viruses, stealth coatings 返回 stealthily