abandon v. go away from (a person or thing or place) not intending to return; forsake; desert

abstract adj. existing in thought or as an idea but not having a physical or practical existence

academy n. school for special training

access n. ~ means of approaching or entering (a place); way in

accommodate v. provide lodging or room for

accompany v. walk or travel with (sb.) as a companion or helper; escort

　 accumulate v. gradually get or gather together an increasing number or quantity of get (sth.) in this way

　　accurate adj. free from error

　　achieve v. gain or reach (sth.), usu by effort, skill, courage, etc

　　acknowledge v. accept the truth of admit (sth.)

　　acquire v. gain (sth.) by one's own ability, efforts or behavior

　　adapt v. ~ sth. (for sth.) make sth. suitable for a new use, situation, etc; modify sth.

　　adequate adj. ~ satisfactory in quantity or quality; sufficient

　　adjacent having a common endpoint or border also immediately preceding or following

　　adjust v. put (sth.) into the correct order or position; arrange

　　administrate v. to administer

　　adult adj. grown to full size or strength

　　advocate v. speak publicly in favour of (sth.); recommend; support

　　affect v. have an influence on (sb./sth.); produce an effect on

　　aggregate v. ~ sb. (fml ) be formed or bring sb. into an assembled group or amount

　　aid n. help

　　albeit conj although

　　allocate v. ~ sth allot or assign sth (to sb./sth.) for a special purpose

　　alter v. become different; change in character, position, size, shape, etc

　　alternative adj. available in place of sth. else; other

　　ambiguous adj. having more than one possible meaning

　　amend v. correct an error in (sth.); make minor improvements in; change slightly

　　analogy n. ~ partial similarity between two things that are compared

　　analyse v. separate into its parts in order to study its nature or structure

　　annual adj. happening every year

　　anticipate v. expect

　　apparent adj. clearly seen or understood; obvious

　　append v. ~ sth (fml ) attach or add sth (esp. in writing)

　　appreciate v. understand and enjoy (sth); value highly

　　approach v. come near or nearer to in space or time

　　appropriate adj. ~ suitable; right and proper

　　approximate adj. almost correct or exact but not completely so

　　arbitrary adj. based on personal opinion or impulse, not on reason

　　area n. extent or measurement of a surface

　　aspect n. particular part or feature of sth being considered

　　assemble v. come together; collect

　　assess v. ~ sth decide or fix the amount of sth

　　assign v. ~ sth to sb give sth to sb as a share of work to be done or of things to be used

　　assist v. ~ in/with sth; ~ (sb) in doing sth (fml ) help

　　assume v. accept as true before there is proof

　　assure v. tell (sb) positively or confidently

　　attach v. ~ sth fasten or join sth (to sth)

　　attain v. succeed in getting (sth); achieve

　　attitude n. ~ way of thinking or behaving

　　attribute v. ~ sth to sb/sth regard sth as belonging to, caused by or produced by sb/sth