se·cu·ri·ty /sɪˈkjʊrəti/
 安全,安全性,防護物,保衛,可靠性,擔保人,抵押品,保證金


 se·cu·ri·ty /sɪˈkjʊrətɪ/ 名詞
 安全,可靠性


 security
 安全; 安全性


 security
 保全 安全


 Se·cu·ri·ty n.; pl.  Securities
 1. The condition or quality of being secure; secureness. Specifically: (a) Freedom from apprehension, anxiety, or care; confidence of power or safety; hence, assurance; certainty.
 His trembling hand had lost the ease,
 Which marks security to please.   --Sir W. Scott.
 (b) Hence, carelessness; negligence; heedlessness.
 He means, my lord, that we are too remiss,
 Whilst Bolingbroke, through our security,
 Grows strong and great in substance and in power.   --Shak.
 (c) Freedom from risk; safety.
 Give up yourself merely to chance and hazard,
 From firm security.   --Shak.
    Some . . . alleged that we should have no security for our trade.   --Swift.
 2. That which secures or makes safe; protection; guard; defense. Specifically: (a) Something given, deposited, or pledged, to make certain the fulfillment of an obligation, the performance of a contract, the payment of a debt, or the like; surety; pledge.
    Those who lent him money lent it on no security but his bare word.   --Macaulay.
 (b) One who becomes surety for another, or engages himself for the performance of another's obligation.
 3. An evidence of debt or of property, as a bond, a certificate of stock, etc.; as, government securities.
 Syn: -- Protection; defense; guard; shelter; safety; certainty; ease; assurance; carelessness; confidence; surety; pledge; bail.

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 security
      n 1: the state of being free from danger or injury; "we support
           the armed services in the name of national security"
           [ant: insecurity]
      2: a formal declaration that documents a fact of relevance to
         finance and investment; the holder has a right to receive
         interest or dividends; "he held several valuable
         securities" [syn: certificate]
      3: a department responsible for the security of the
         institution's property and workers; "the head of security
         was a former policeman" [syn: security department]
      4: measures taken as a precaution against theft or espionage or
         sabotage etc.; "military security has been stepped up
         since the recent uprising" [syn: security measures]
      5: defense against financial failure; financial independence;
         "his pension gave him security in his old age"; "insurance
         provided protection against loss of wages due to illness"
         [syn: protection]
      6: freedom from anxiety or fear; "the watch dog gave her a
         feeling of security"
      7: an electrical device that sets off an alarm when someone
         tries to break in [syn: security system, {security
         measures]
      8: property that your creditor can claim in case you default on
         your obligation; "bankers are reluctant to lend without
         good security" [syn: surety]
      9: a guarantee that an obligation will be met [syn: surety]