being on guard in the public security work

• 公安防范

being on guard in the public security work的用法和样例：

例句

1. A parolee shall be supervised by a public security organ.
   被假释的罪犯由公安机关予以监督。
2. The maximum penalty for breaching the Public Order Ordinance is five years in jail.
   违反公安条例的最高刑罚为入狱五年。