相关单词近义词 unprotected 无保护的, unarmed 无武器的, exposed 暴露的, unguarded 无保护的, vulnerable 易受伤害的, helpless 无助的, wide open 敞开的, weak 弱的, frail 脆弱的, powerless 无力的, defenseless 无防备的, defencelessly 无防御地, defenselessly defense的副词形式...临近词defence, defence attitude, defence in place, defence measures, defence function, defence position, defence reaction, defence strategy, defence industry, defence response, defence spending相似词defection, defective, defence, defence mechanism, defend, defendant, defender, defenestrate, 返回 defenceless