security

• 表示免受危险、威胁或伤害的状态，也指为保障安全和防护而采取的措施。

A noun referring to the state of being free from danger, threat, or harm, or measures taken to ensure safety and protection.

不可数

1. Safety from dangerB1formal

   The state of being free from danger, threat, or harm.

   安全

   • The government increased security at the airport.
   • Home security systems help protect families from intruders.
   • They tightened security after the recent theft.

   同义词protectionrefugesafenesssafetysanctuary

   反义词dangerhazardinsecurityperilriskthreat

2. Financial assetB2formalbusiness

   A financial instrument, such as a stock or bond, that represents ownership or debt.

   证券

   • He invested in government securities for a stable return.
   • The company issued new securities to raise capital.
   • Trading securities requires careful market analysis.

   同义词bondcertificateequityinvestmentstock

3. Guarantee or assuranceB2formal

   Something given as a pledge or guarantee to ensure fulfillment of an obligation.

   担保

   • The loan was secured against the property as security.
   • She offered her jewelry as security for the debt.
   • The bank requires collateral as security for large loans.

   同义词assurancecollateraldepositguaranteepledgesuretywarranty