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I really feel...that I got lucky beacuse any sense of security pulled out from under of me. So I was forced to look forward. I had to...there was no going back. And I reached a point where I just thought "I"m gonna work as hard as I can, and see what happened".

——Homeless to Harvard: The Liz Murray Story

我非常幸運的是……我心中所有的安全感被身體拋棄，我不得不向前看，我必須向前看，沒有后退的路。然后我找到了一種狀態：“好吧，我要盡我所能的工作，看會發生些什么？” 

——《風雨哈佛路》

一、你知道security有幾種含義嗎？

n.

1.安全，安全感 [U] the quality or state of being secure

Two guards looked after the security of the property.

兩個警衛看管財產的安全。

2.防備，保安；防護，防御（措施） [U,C] something given, deposited, or pledged to make certain the fulfillment of an obligation

They tightened security during the President"s visit.

他們在總統訪問期間加強了安全防衛。

3.保證；保障；擔保（品） [U,C] an instrument of investment in the form of a document (as a stock certificate or bond) providing evidence

A man"s own good-breeding is his best security against other people"s ill manners.

自身教養好是抵制他人無禮的最好保證。

4.證券，債券 [C]  documents proving that sb is the owner of shares

Every kind of fixed-interest bearing security is a promise to pay certain sums of money in the future.

每一種帶有固定利息的證券都是種在將來付給一定數額貨幣的允諾。

二、含有security的常見短語

social security

社會福利事業,社會保險制度

government security

政府證券

security interest

擔保物權

unlisted security

非上市證券，未掛牌證券

collective security

n. 集體安全

三、學會security的用法了嗎？來做個填詞游戲吧

It"s your duty to superintend the ______ affairs.

主管安全保衛工作是你的職責。