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字头A
a (an) - ad. one; any; each
able - v. having the power to do something
about - ad. almost ("about half"); of or having a relation to ("We talk about the weather.")
above - ad. at a higher place
accept - v. to agree to receive
accident - n. something that happens by chance or mistake; an unplanned event
accuse - v. to say a person is responsible for an act or crime; to make a statement against someone
across - ad. from side to side; to the other side
act - v. to do something
activist（激进分子） - n. one who seeks change through action
actor - n. someone acting in a play or show
add - v. to put (something) with another to make it larger; to say more
administration - n. the executive part of a government, usually headed by a president or prime minister
admit - v. to accept ("admitted to the United Nations"); to express one's guilt or responsibility ("He admitted that what he did was wrong.")
adult - n. a grown person
advise - v. to help with information, knowledge or ideas in making a decision
affect - v. to produce an effect on; to influence ("A lack of sleep affected the singer's performance.")
afraid - ad. feeling fear
after - ad. later; behind
again - ad. another time; as before
against - ad. opposed to; not agreeing with something
age - n. how old a person or thing is
agency - n. an organization that is part of a larger group ("an agency of the United Nations")
aggression - n. an attack against a person or country; the violation of a country's borders
ago - ad. of time past; before now
agree - v. to have the same belief as someone; to be willing to do something
agriculture - n. farming
aid - v. to help; to support; n. help, assistance
aim - v. to point a gun at; n. a goal or purpose
air - n. the mixture of gases around the earth, mostly nitrogen and oxygen, that we breathe
air force - n. a military organization using airplanes
airplane - n. a vehicle with wings that flies
airport - n. a place where airplanes take off and land
album - n. a collection of recorded music
alcohol - n. a strong, colorless liquid, usually made from grain, used as a drug or in industrial products
alive - ad. having life; not dead
all - ad. everything; everyone; the complete amount
ally - n. a nation or person joined with another for a special purpose
almost - ad. a little less than completely
alone - ad. separated from others
along - ad. near or on ("along the road")
already - ad. before now; even now
also - ad. added to; too
although - conj. even if it is true that
always - ad. at all times; every time
ambassador - n. a nation's highest diplomatic representative (to another government)
amend - v. to add to or to change (a proposal or law)
ammunition（军火） - n. the bullets or shells fired from guns
among - ad. in or part of (a group)
amount - n. the number, size or weight of anything
anarchy - n. a lack of order; lawlessness
ancestor - n. a family member from the past
ancient - ad. very old; long ago
and - conj. also; in addition to; with
anger - n. a strong emotion against someone or something
animal - n. a living creature that moves, such as a dog or cat
anniversary - n. a yearly celebration or observance of an event that happened in the past
announce - v. to make known publicly; to declare officially
another - ad. one more; a different one
answer - n. a statement produced by a question; v. to make a statement after being asked a question
any - ad. one or more of no special kind
apologize - v. to express regret for a mistake or accident for which one accepts responsibility
appeal - v. to take to a higher court, person or group for a decision; to call on somebody for help
appear - v. to show oneself; to come into sight; to seem
appoint - v. to name; to choose ("appoint a judge")
approve - v. to agree with; to agree to support
archeology（考古学） - n. the scientific study of past human life and activities
area - n. any place or part of it
argue - v. to offer reasons for or against something; to dispute; to disagree
arms - n. military equipment; weapons
army - n. military ground forces
around - ad. on every side (of)
arrest - v. to seize a person for legal action; to take as a prisoner
arrive - v. to come to a place, especially at the end of a trip
art - n. expressions or creations by humans, such as paintings, music, writing or statues
artillery - n. big guns
as - conj. equally ("as fast as"); when; while
ash - n. the part left after something burns
ask - v. to question; to say something is wanted ("We ask the teacher questions every day.")
assist - v. to help
astronaut - n. a person who travels in space
astronomy - n. the scientific study of stars and the universe
asylum（避难） - n. political protection given by a government to a person from another country
at - prep. in or near ("at the edge"); where ("look at"); when ("at noon")
atmosphere - n. the gases surrounding any star or planet
attach - v. to tie together; to connect
attack - n. a violent attempt to damage, injure or kill; v. to start a fight
attempt - v. to work toward something; to try; to make an effort
attend - v. to be present at
automobile - n. a vehicle with wheels used to carry people; a car
autumn - n. the time of the year between summer and winter
average - n. something (a number) representing the middle; ad. common; normal
avoid - v. to stay away from
awake - ad. not sleeping
award - n. an honor or prize for an act or service
away - ad. not near
