discard v. 丢弃 Don’t ~ the drink cans carelessly。
deduce v. 推断
dedicate v. 献给
deficiency n. 缺乏， 不足 a vitamin ~ in his diet
defy v。(公然)违抗
degenerate v. 退化
degrade v. 降低身份
deprive v. 剥夺 You ~d him of his right to privacy。
descendant n. 后代
destiny n. 命运=fate
destructive a. 破坏性的 The weapon has a great ~ power。
deteriorate v. 恶化 His health has ~d。