保安 (bǎo'ān) means "security guard," referring to a person responsible for maintaining safety and order. It is a common noun used in everyday contexts such as buildings, events, and personal protection.
小区门口的保安每天都很认真地检查出入证件。
Xiǎoqū ménkǒu de bǎo'ān měitiān dōu hěn rènzhēn de jiǎnchá chūrù zhèngjiàn.
The security guard at the entrance of the residential compound diligently checks IDs every day.
商场里的保安帮我找到了丢失的钱包。
Shāngchǎng lǐ de bǎo'ān bāng wǒ zhǎo dào le diūshī de qiánbāo.
The security guard in the shopping mall helped me find my lost wallet.
他毕业后做了两年保安,后来考上了公务员。
Tā bìyè hòu zuò le liǎng nián bǎo'ān, hòulái kǎo shàng le gōngwùyuán.
After graduating, he worked as a security guard for two years, and later passed the civil service exam.