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1·He was upgraded to security guard.

他被提升为保安。《柯林斯英汉双解大词典》

2·The gang tied up a security guard.

那群歹徒把一名保安人员捆绑起来。《牛津词典》

3·She hasn't been cleared by security.

她尚未获保安部门批准做机要工作。《牛津词典》

4·They had penetrated airport security.

他们已打入机场保安组织。《牛津词典》

5·I knew he worked for a security firm.

我知道他为一家保安公司工作。《柯林斯英汉双解大词典》

6·Such security measures may be overkill.

如此安全措施可能是过分之举。《柯林斯英汉双解大词典》

7·Let's look at the question of security.

咱们来看一下保安问题。《牛津词典》

8·They pose a serious threat to security.

他们对安全构成严重威胁。《牛津词典》

9·We need tighter security at the airport.

我们需要在机场实行更加严密的安全措施。《牛津词典》

10·The country stepped up internal security.

该国加强了国内安全防卫。《柯林斯英汉双解大词典》

安全

1·Such security measures may be overkill.

如此安全措施可能是过分之举。《柯林斯英汉双解大词典》

2·They pose a serious threat to security.

他们对安全构成严重威胁。《牛津词典》

3·We need tighter security at the airport.

我们需要在机场实行更加严密的安全措施。《牛津词典》

4·He urged restraint on the security forces.

他竭力主张限制安全部队。《柯林斯英汉双解大词典》

5·The security software he uses is home brew.

他用的安全软件是自己编的。《牛津词典》

安全性

1·It'd offer greater security, because it'd be on a home-based contract.

它会更具安全性，因为它是一份基于家庭的合同。

2·Every data source must have a defined custodian (a business role) responsible for the accuracy, integrity, and security of that data.

每个数据源必须有确定的管理人（业务角色）负责数据的精确性、完整性和安全性。

3·To improve security, employers should assign randomly generated passwords to employees rather than allowing employees to make up their own.

为了提高安全性，雇主应该给员工提供随机生成的密码，而不是让员工自己设置密码。

4·The commission's office of compliance, inspection, and investigations plans to intensify its security of stock analysts to investigate whether research is an independent function at brokerage firms.

该委员会的合规，检查和调查办公室计划加强其股票分析师的安全性，以调查研究是否是经纪公司的独立职能。

5·To ensure the security of wartermark, the wartermark image was scrambled beforeembedding and then expanded to the twifold size of the original image.

为保证水印的安全性，在嵌入之前先对水印图像作置乱处理，再将水印图像位扩展为原始图像的两倍大小。

证券

1·The rate of return an investor receives if a fixed-income security is held to maturity.

如果固定收益证券持有至到期日，则投资人的收益率将得到补偿。

2·If it is a stock (or other security, including a bond), you can borrow it and agree to sell the stock to someone at some specified date in the future at a specified price.

如果是一支股票(或者其他证券，如债券)，你可以从别处融券(借股票)，并同意在未来某个指定日期、以某个指定价格卖给某人。

3·The two bankers, Phelps and Elder, sat off in a corner behind the dinner table, where they could finish their discussion of the new usury law and its effect on chattel security loans.

菲尔普斯和埃尔德两个银行家，坐在餐桌后的角落里，他们可以在那里把新的重利法，以及这个新法对动产证券贷款的影响讨论完毕。

4·It involved a complex synthetic security derived from existing mortgage-backed securities by cloning them into imaginary units that mimicked the originals.

它涉及一种复杂的合成证券，源自于将现有的抵押贷款证券“克隆”成模仿原型的虚构单位。

5·The ISIN code is a 12-character alpha-numerical code that serves for uniform identification of a security at trading and settlement.

IS IN编码是一个包含12个字符的字母数字编码，用于在交易和结算时统一标识证券。

安保

1·Security officers have carried out a number of house-to-house searches.

安保人员已经多次挨家挨户地搜查。《柯林斯英汉双解大词典》

2·The presence of a uniformed security guard is even better.

如果有穿着制服的安保人员在就更好了。

3·It will involve 15,000 police, private security and military personnel.

该项目将包括1.5万名警察、私人安保人员和军事人员。

4·It's a standard practice for a company like this one to employ a security officer.

像这样的一家公司，雇佣安保人员是一种标准做法。

5·An Olympic security plan five years in the making is taking shape in Vancouver this week.

一项历时五年的奥运安保计划本周在温哥华初具雏形。

保证

1·The migrants themselves hesitate to say they'll never return to the farm; without job security, their small plots of land are their only insurance.

流动人口们自己也不是很确定是否会回到农田中；没有了工作的保证，他们的土地就是他们唯一的保险。

2·Our own actions are our security,not others' judgements.

我们的行为是自己的保证，并不是旁人的鉴定。

3·Traditional it professionals will need to be weaned from the false security of trying to think everything through up front.

传统的IT专业人员需要去掉那种事先思考所有事情的保证。

4·The focus is on open source technologies, but there are also mentors for Secure software's CodeAssure product line for automated security analysis of software.

集中在开源技术上，而不是检查安全软件的代码保证产品线。

5·Do what you have to, use your potential but do not count that it will give your job a 100% security.

完成职责，发挥潜能，但不要指望能保证饭碗万无一失。

保密性

1·The Army is undertaking the upgrades to ensure a seamless interface with existing networks and to provide extensive security and business continuity.

美国陆军正实施升级计划，把现有网络的无缝接口，提升保密性和业务连续性。

2·The experimental results show that both of them can resist signal distortions such as JPEG compression, Gauss noise, and the improved algorithm has better robustness and security.

从试验结果看，两种算法能够抵抗JPEG 压缩以及高斯噪声等信号处理的攻击，且改进后的算法水印鲁棒性及保密性得到了增强。

3·CDMA technology is widely used in LEO satellites communication because of many merits offered by CDMA system such as suppression of ingress noise, flexibility of bandwidth assignment and the security.

CDMA作为一种抗噪声强、带宽分配灵活，保密性强的传输接入方式被广泛的应用于民用、军用低轨卫星通信系统中。

4·The features of multilevel security of database, such as its integrity, security and serviceability, are analysed both in depth and in width by way of a multilevel security model illustration.

介绍了多级安全数据库的完整性与保密性，展示了多级模型，从深度和广度探讨了数据库的多级安全问题。

5·It USES some security technologies such as cipher technology, digital certificate, digital digest and digital finger print to confirm the electronic commerce applications' security.

它通过使用加密、数字证书、数字签名和数字指纹等安全技术，可以很好地保证电子商务应用的保密性、可靠性和完整性。

(1)social security社会保险，社会保障

(1)public security公共安全

(1)security system安全系统

(1)network security网络安全；网络安全性；网络保密

(1)for security为了安全

(1)national security国家安全；民族安全