73天背完大学英语四级词汇：第20天.doc

73天背完大学英语四级词汇：第20天 73天背完英语四级词汇教你用科学的方法一举打破四级词汇难关。第二十天decreasev. 减少，降低decrease in number 数目减少n. 减少难点on the decrease 在减少中decrease by 减少了the population of the village has decreased by 150 to 500.该村人口减少了150，只剩下500人。deducevt. 演绎，推论，推断deduce a conclusion from premises 从前提推出结论难点deduce from 由推论deern.（单复数同形）鹿defectn. 缺点，缺陷，短处同faultdefencen. 防御，保卫；防御物，工事；辩护，答辩难点in defence of 保卫they decided to fight in defence of their country. 他们决心为保卫祖国而战。definevt. 解释，下定义；限定，规定the powers of a judge are defined by law. 法官的权力法律有明文规定。definiteadj. 明确的a definite answer 明确的答复同explicitadj. 肯定的同certaindefinitelyadv. 一定地，肯定地；明确地，确切地definitionn. 定义，释义，解说deletevt. 删除同erasedelicateadj. 纤细的，娇嫩的；精美的，精致的jewellery of delicate workmanship 精工镶嵌的珠宝饰物adj. 病弱的in delicate health 身体娇弱adj. 易碎的，需小心照料的；微妙的，棘手的deliciousadj. 美味的；芬芳的；有趣味的deliverv. 解救，释放；投递，送交；发表，表达deliver a speech 发表演说v. 使分娩，接生deliver a woman of twins 为一妇女接生双胞胎难点deliver sb. from 从中解救某人deliver sth. （over）to sb. 把某物交付给某人deliveryn. 投递，送交难点on delivery 送达时，交货时take delivery of 收到democracyn. 民主政治，民主主义；民主制度，民主国家democraticadj. 民主的，民主主义的demonstratevt. 说明，论证；表露，显示同demonstrate against 示威/反对denseadj. 密集的，浓密的a dense fog 浓雾densityn. 密集，稠密；密度denyvt. 否认；拒绝给予难点deny doing .it cannot be denied that / there is no denying the fact that 不容否认（我们必须承认）departvt. 离开，出发难点depart for 动身去depart from 离开，起程departmentn. 部门，系departuren. 离开，出发dependentadj. 依靠的，依赖的；从属的难点be dependent on 依靠，由决定反be independent ofdepositvt. 存放，寄存，储蓄；使沉淀n. 存款；沉积物；定钱，押金难点deposit sth. with sb. 把某物寄放在某人处he deposited the papers with his lawyer. 他将文件交于律师保管。depressvt. 使沮丧，使低沉the failure depressed him. 失败使他郁郁寡欢vt. 降低，压低；使萧条（不景气）depthn. 深度；深厚a depth of feeling 深厚的感情derivev. 取得，得到she derived great pleasure from her studies. 她从读书研究中得到极大的乐趣。v. 起源，来由（from）descendvi. 下来，下降；传下，遗传this custom descended from generation to generation. 这习俗一代一代传下来。同pass down难点descend from 从下来we descended from the mountain. 我们从山上下来。be descended from 为的后裔according to the bible, we are all descended fro