D

dam - n. a wall built across a river to hold back flowing water

damage - v. to cause injury or destruction; n. harm; hurt or injury， usually to things?

dance - v. to move the body and feet to music; n. a series of steps， usually to music?

danger - n. a strong chance of suffering injury， damage or loss?

dark - ad. having little or no light ("The room was dark.")?

date - n. an expression of time; a day， month and year?

daughter - n. a person’s female child?

day - n. twenty-four hours; the hours of sunlight?

dead - ad. not living?

deaf - ad. not able to hear?

deal - v. to have to do with ("The talks will deal with the problem of pollution."); to
buy or sell ("Her company deals in plastic.")?

debate - v. to argue for or against something; n. a public discussion or argument?

debt - n. something that is owed; the condition of owing?

decide - v. to choose; to settle; to judge?

declare - v. to say; to make a statement?

decrease - v. to make less in size or amount?

deep - ad. going far down; a long way from top to bottom?

defeat - v. to cause to lose in a battle or struggle; n. a loss; the condition of having
lost?

defend - v. to guard or fight against attack; to protect?

deficit - n. a shortage that results when spending is greater than earnings， or
imports are greater than exports?

define - v. to give the meaning of; to explain?

degree - n. a measure of temperature?

delay - v. to decide to do something at a later time; to postpone; to cause to be late?

delegate - n. one sent to act for another; one who represents another?

demand - v. to ask by ordering; to ask with force?

democracy - n. the system of government in which citizens vote to choose leaders or
to make other important decisions?

demonstrate - v. to make a public show of opinions or feelings ("The crowd
demonstrated in support of human rights."); to explain by using examples ("The
teacher demonstrated the idea with an experiment.")?

denounce - v. to accuse of being wrong or evil; to criticize severely?

deny - v. to declare that something is not true; to refuse a request?

depend - v. to need help and support?

deplore - v. to regret strongly; to express sadness?

deploy - v. to move forces or weapons into positions for action?

depression - n. severe unhappiness; a period of reduced business and economic
activity during which many people lose their jobs?

describe - v. to give a word picture of something; to give details of something?

desert - n. a dry area of land?

design - v. to plan or create plans for?

desire - v. to want very much; to wish for?

destroy - v. to break into pieces; to end the existence of?

detail - n. a small part of something; a small piece of information?

develop - v. to grow; to create; to experience progress?

device - n. a piece of equipment made for a special purpose?

dictator - n. a ruler with complete power?

die - v. to become dead; to stop living; to end?

diet - n. usual daily food and drink?

different - ad. not the same?

difficult - ad. not easy; hard to do， make or carry out?

dig - v. to make a hole in the ground?

dinner - n. the main amount of food eaten at a usual time ("The family had its dinner
at noon."); a special event that includes food ("The official dinner took place at the
White House.")?

diplomat - n. a person who represents his or her government in dealing with another
government?

direct - v. to lead; to aim or show the way ("He directed me to the theater."); ad.
straight to something; not through some other person or thing ("The path is
direct.")?

direction - n. the way (east， west， north， south); where someone or something came
from or went to?

dirt - n. earth or soil?

disappear - v. to become unseen; to no longer exist?

disarm - v. to take away weapons; to no longer keep weapons; to make a bomb
harmless by removing its exploding device?

discover - v. to find or learn something?

discuss - v. to talk about; to exchange ideas?

disease - n. a sickness in living things， often caused by viruses， germs or bacteria?

dismiss - v. to send away; to refuse to consider?

dispute - v. to oppose strongly by argument; n. an angry debate?

dissident - n. a person who strongly disagrees with his or her government?

distance - n. the amount of space between two places or objects ("The distance
from my house to your house is two kilometers.")?

dive - v. to jump into water head first?

divide - v. to separate into two or more parts?

do - v. to act; to make an effort?

doctor - n. a person trained in medicine to treat sick people?

document - n. an official piece of paper with facts written on it， used as proof or
support of something?

dog - n. a small animal that often lives with humans?

dollar - n. United States money， one hundred cents?

door - n. an opening for entering or leaving a building or room?

down - ad. from higher to lower; in a low place?

dream - v. to have a picture or story in the mind during sleep; n. a picture or story in
the mind during sleep; a happy idea about the future?

drink - v. to take liquid into the body through the mouth?

drive - v. to control a moving vehicle?

drop - v. to fall or let fall; to go lower?

drown - v. to die under water?

drug - n. anything used as a medicine or in making medicine; a chemical substance
used to ease pain or to affect the mind?

dry - ad. not wet; without rain?

during - ad. through the whole time; while (something is happening)?

dust - n. pieces of matter so small that they can float in the air?

duty - n. one’s job or responsibility; what one must do because it is right and just