保安的英文：
ensure public security
ensure safety
security

参考例句：
  • Police operated under the umbrella of the security forces.
    警方在保安部队的掩护下采取了行动.
  • He was upgraded to security guard.
    他被擢升为保安。
  • There is a plethora of private security guards.
    肯尼亚有极多的私人保安。
  • A security van,eg for transporting money
    保安车(如解送金钱的)
  • The infirmary is the most unsubstantial part of the whole security system.
    医务室是整个保安体系中最薄弱的环节。
  • As a security guard, he watched the monitor diligently.
    作为一个保安，他认真的监视着监控器。
  • Does the facility have a written security policy?
    工厂是否有成文的保安政策？
  • The International Ship and Port Facility Security Code (ISPS Code)
    国际船舶和港口设施保安规则
  • The bank's much-vaunted security system failed completely.
    这家银行大肆吹嘘的保安设施完全无济于事.
  • He finds occasional jobs as a security guard for 70 rand a day.
    他找到了当保安的临时工作，日报酬是七十兰特。
ensure是什么意思：
v. 保证，担保；保护，使安全，确保
  • No system that ensured spiritual progress.
    没有确保精神进化的系统。
  • Ensure the effectiveness and identification of document.
    确保文件的有效性,并得到明显的识别。
  • Please rest assured that repayment is ensured.
    请您放心，还款是有保障的。
public是什么意思：
adj. 公众的；公共的，公用的；政府的；公然的，众所周知的
n. 公众，民众；大众，群众
  • public administrator
    公定遗产管理人
  • Public law includes laws that affect the public generally.
    公法一般包括影响公众的法律。
  • The press will give publicity to the fact.
    出版社将把事实真相公诸于世。
security是什么意思：
n. 安全，安全感；防护；保证；保障；证券
  • a security guard
    安全警卫
  • This is a secure anchorage.
    这是个安全泊地。
  • Underwrite securities
    包销证券

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