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data n. facts or information used in deciding or discussing sth
debate n. formal argument or discussion of a question, eg at a public meeting or in Parliament, with two or more opposing speakers, and often ending in a vote
decade n. period of ten years
decline v. say `no' to (sth); refuse (sth offered), usu politely
deduce v. ~ sth arrive at (facts, a theory, etc) by reasoning; infer sth
define v. ~ sth state precisely the meaning of (eg words)
definite adj. clear; not doubtful
demonstrate v. ~ sth (to sb) show sth clearly by giving proof or evidence
denote v. be the name, sign or symbol of (sth); refer to
deny v. say that (sth) is not true
depress v. make sad and without enthusiasm
derive v. ~ sth from sth obtain sth from sth; get sth from sth
design n. ~ (for sth) drawing or outline from which sth may be made
despite prep without being affected by
detect v. discover or recognize that (sth) is present
deviate v. ~ from sth stop following
device n. thing made or adapted for a special purpose
devote v. ~ oneself/sth to sb/sth give to sb/sth; dedicate ;
differentiate v. ~ between A and B; ~ A (from B) see or show (two things) to be different; show sth to be different (from sth else)
dimension n. measurement of any sort
diminish v. become smaller or less; decrease
discrete adj. separate; distinct
discriminate v. ~ ~ A from B see or make a difference (between two things)
displace v. move from the usual or correct place
display v. ~ sth put sth on show
dispose v. place(sb/sth) in a suitable way; arrange
distinct adj. easily heard, seen, felt or understood; definite
distort v. pull or twist out of its usual shape
distribute v. ~ sth separate sth into parts and give a share to each person or thing
diverse adj. of different kinds; varied
document n. paper, form, book, etc giving information about sth, evidence or proof of sth
domain n. lands owned or ruled by a nobleman, government, etc
domestic adj. of the home, household or family
dominate v. have control of or a very strong influence on (people, events, etc)
draft n. rough preliminary written version of sth
drama n. play for the theatre, radio or TV
duration n. time during which sth lasts or continues
dynamic adj. of power or forces that produce movement
vt. 演绎，推断，溯源
