security
[si'kju:riti]
n.安全, 保证, 证券, 债券, 抵押, 防护措施
例句与用法：
The robbers got into the bank by masquerading as security men.
劫匪假装成保安人员进入银行。
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。
The airport authorities have promised to review their security measurements.
机场当局已答应重新检查他们的安全措施。
She swindled 1000 out of the Social Security.
她骗得了 1000 英镑社会保险金。
They lulled me into a false sense of security.
他们哄骗我，让我产生了一种虚假的安全感。
He uses his house as security to borrow the money.
他用房子作借钱的抵押。
What I need now is the security of a happy home.
我现在需要的是一个幸福家庭所给予的安全感。
词形变化：
名词复数: securities |
详细释义：
n.
1. 安全, 安全感[U]
Two guards looked after the security of the property.
两个警卫看管财产的安全。
2. 防备, 保安; 防护, 防御(措施)[U][C][(+against/from)]
They tightened security during the President's visit.
他们在总统访问期间加强了安全防卫。
3. 保证; 保障; 担保(品)[U][C]
A life-insurance policy may serve as security for a loan.
人寿保险可作贷款的抵押。
4. 证券, 债券[P]
He traded in securities and became rich.
他做证券交易发了财。