短語詞組短語naval vessel systems 艦艇系統(tǒng)naval vessel emergency ration 艦船應急口糧naval vessel wreckage 艦船失事naval vessel condition 艦船環(huán)境naval vessel illumination 艦船照明Naval Vessel Valve 艦船閥門naval vessel harmful gas 艦船有害氣體noise of naval vessel 艦艇噪聲big naval vessel 大型艦船 返回 naval vessel