n.安全；保证；证券；债券；抵押；防护措施
I'll undertake for your security. 我将保证你的安全。
The visitors were secarched for security reasons. 为了安全起见,来宾受到了检查。
Our own actions are our security. 我们的行为是自己的保证。
He traded in securities and became rich. 他做证券交易发了财。
He has given his house as security for the loan. 他以抵押自己的房屋作为贷款的担保。
A life insurance policy may serve as security for a loan. 人寿保险可作贷款的抵押。
n.不安全；不牢靠；局促不安；心神不定
