学习资料

[意       思]n. 安全，安全感
[例]  Two guards looked after the security of the property. 两个警卫看管财产的安全。
n. 防备，保安，防护，防御
[例]  They tightened security during the President's visit. 他们在总统访问期间加强了安全防卫。
n. 保证，保障，担保
[例]  A life-insurance policy may serve as security for a loan. 人寿保险可作贷款的抵押。
n. 证券，债券
[例]  He traded in securities and became rich. 他做证券交易发了财。

更多意思

n.1.  安全，平安
2.  保护措施, 保卫部门, 安全工作
3.  (securities)证券
4.  担保,保证
5.  抵押品

参考例句

1.	This law falls into abeyance when the country's security is threatened.
	当国家安全受到威胁时,这项法规暂停实施。
2.	A security guard was killed in the bank raid.
	这次银行劫案中有一名保安员遇害。
3.	All the people who know this secret represent a security risk.
	凡是知道这个秘密的人都对安全造成危险。
4.	Security men mingled with the crowd.
	保安人员混杂在人群中。
5.	The security of the country had been imperilled.
	国家安全处于危险之中。