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73天背完大学英语四级词汇:第20天

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《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

decrease
v. 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。

deduce
vt. 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

deer
n.(单复数同形)鹿

defect
n. 缺点,缺陷,短处
[同]fault

defence
n. 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。

define
vt. 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。

definite
adj. 明确的
a definite answer 明确的答复
[同]explicit
adj. 肯定的
[同]certain

definitely
adv. 一定地,肯定地;明确地,确切地

definition
n. 定义,释义,解说

delete
vt. 删除
[同]erase

delicate
adj. 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

delicious
adj. 美味的;芬芳的;有趣味的

deliver
v. 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

delivery
n. 投递,送交
[难点]
on delivery 送达时,交货时
take delivery of 收到

democracy
n. 民主政治,民主主义;民主制度,民主国家

democratic
adj. 民主的,民主主义的

demonstrate
vt. 说明,论证;表露,显示
[同]
demonstrate against … 示威/反对…

dense
adj. 密集的,浓密的
a dense fog 浓雾

density
n. 密集,稠密;密度

deny
vt. 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…)

depart
vt. 离开,出发
[难点]
depart for 动身去…
depart from 离开,起程

department
n. 部门,系

departure
n. 离开,出发

dependent
adj. 依靠的,依赖的;从属的
[难点]
be dependent on 依靠…,由…决定
[反]be independent of

deposit
vt. 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。

depress
vt. 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)

depth
n. 深度;深厚
a depth of feeling 深厚的感情

derive
v. 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)

descend
vi. 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 from Adam. 根据圣经,我们都是亚当的后裔。
descend to (doing)sth. 屈辱到,堕落到
You would never descend to cheating. 你绝不至于堕落到欺骗。
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