平底无脚酒杯 tumbler

平底无脚羽觞 tumbler

彻底无语 Completely silent

无底洞 The Abyss ; Black hole

海底无脊椎动物 benthic invertebrates

彻底无遗漏的轰炸 carpet bombing

平底无脚杯 Tumbler Glasses

惊暴无底洞 Endless Descent

底边无缝焊 [机] closed weld

无底深渊 Abyssal Maw ; Abgrund