n.安全；保證；證券；債券；抵押；防護措施
I'll undertake for your security. 我將保證你的安全。
The visitors were secarched for security reasons. 為了安全起見,來賓受到了檢查。
Our own actions are our security. 我們的行為是自己的保證。
He traded in securities and became rich. 他做證券交易發(fā)了財。
He has given his house as security for the loan. 他以抵押自己的房屋作為貸款的擔保。
A life insurance policy may serve as security for a loan. 人壽保險可作貸款的抵押。
n.不安全；不牢靠；局促不安；心神不定
