annulv.废除;消减;取消;宣告无效
annul a decision撤销决议
annulus fibrosis纤维变形环, 纤维化环
annulus cruralis[医] 股环
annulated column环柱,环形柱
annulus-lifted环隙气升式
annul a contract废止合同
annulus fibrosus[医] 纤维环
annulus wellbore环空井筒
"a ring of ships in the harbor"
"a halo of smoke"