Hadal zone[海洋] 超深渊带;深渊区;幽渊带;超深渊底区
hadal pelagic超深渊水层的
hadal sedimentation超深渊沉积作用;超深海沈积作用
hadal depth超深渊
Hadal trench海斗深渊
T Hadal英国入侵
hadal fauna[动] 超深渊动物
hadal marine zone超深海渊带
HADAL-LANDER深渊登陆者
ADJ(形容词) of, relating to, or constituting the zones of the oceans deeper than abyssal: below about 6000 metres (18000 ft) 海沟的 → see also abyssal