1.  At the first sight of the word, you must say it means "security", but if you have done more exercises about the word, you will learn to the second mean about the word, that is "safe-box" .

2.  In addition, the governments also take many measures to protect the people's health and security .

3.  Secondly, the governments have paid more attention to the people's security, working conditions and nutritious protection, etc.

4.  And even more, fake commodies perhaps do harm to our personal security, for instence , just as fake medicine, if you have it, you can imagine how dangerous it will be !

5.  Under the circumstances, the most important thing to prevent this crime is tightening up the security of the school.

6.  The security men should make their rounds often and make the thieves have no chance to steal the bicycles.

7.  Furthermore, the owners of the bikes pay attention to their bike's security .

8.  Also, I could help the police catch criminals if I were invisible and help to guard the security and peace of the society.

9.  With the unimaginable development of medical science, much better security of life is guaranteed.

10.  He would even find no security at home, for he is not sure whether the door would be knocked opend at any time, day or night, by several full-armed policemen with loaded guns pointing towards him.