ex·act /ɪgˈzækt/
 (a.)確切的,正確的;準確的,精確的(vt.)強要,強求;急需,需要


 Ex·act, v. t. [imp. & p. p. Exacted; p. pr. & vb. n. Exacting.]  To demand or require authoritatively or peremptorily, as a right; to enforce the payment of, or a yielding of; to compel to yield or to furnish; hence, to wrest, as a fee or reward when none is due; -- followed by from or of before the one subjected to exaction; as, to exact tribute, fees, obedience, etc., from or of some one.
    He said into them, Exact no more than that which is appointed you.   --Luke. iii. 13.
 Years of servise past
 From grateful souls exact reward at last   --Dryden.
 My designs
 Exact me in another place.   --Massinger.


 Ex·act a.
 1. Precisely agreeing with a standard, a fact, or the truth; perfectly conforming; neither exceeding nor falling short in any respect; true; correct; precise; as, the clock keeps exact time; he paid the exact debt; an exact copy of a letter; exact accounts.
    I took a great pains to make out the exact truth.   --Jowett (Thucyd. )
 2. Habitually careful to agree with a standard, a rule, or a promise; accurate; methodical; punctual; as, a man exact in observing an appointment; in my doings I was exact. “I see thou art exact of taste.”
 3. Precisely or definitely conceived or stated; strict.
 An exact command,
 Larded with many several sorts of reason.   --Shak.


 Ex·act, v. i. To practice exaction. [R.]
    The anemy shall not exact upon him.   --Ps. lxxxix. 22.

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 exact
      adj 1: marked by strict and particular and complete accordance with
             fact; "an exact mind"; "an exact copy"; "hit the exact
             center of the target" [ant: inexact]
      2: (of ideas, images, representations, expressions)
         characterized by perfect conformity to fact or truth ;
         strictly correct; "a precise image"; "a precise
         measurement" [syn: accurate, precise]
      v 1: claim as due or just; "The bank demanded payment of the
           loan" [syn: demand]
      2: take as an undesirable consequence of some event or state of
         affairs; "the accident claimed three lives"; "The hard
         work took its toll on her" [syn: claim, take]