保安

wǒ zhī dào tā wèi yī jiā bǎo ān gōng sī gōng zuò

我知道他为一家保安公司工作。

I knew he worked for a security firm.

tā men yǐ dǎ rù jī chǎng bǎo ān zǔ zhī

他们已打入机场保安组织。

They had penetrated airport security.

fǎ yuàn zài yī suǒ jiù shí de bó wù guǎn kāi tíng bǎo ān cuò shī hěn yán mì

法院在一所旧时的博物馆开庭，保安措施很严密。

The court sits under tight security in a former museum.

bǎo ān kāi guān

保安开关

safety cutoff

bǎo ān bù mén

保安部门

security service

bǎo ān chē

保安车

security van

bǎo ān duì

保安队

a public security corps

jiā qiáng bǎo ān gōng zuò

加强保安工作

strengthen public security