security on accounts receivable

例句：

1. 1. The company has implemented strictsecurity measures to prevent theft.
   该公司已实施严格的安全措施以防止盗窃。
2. 2. The newsecurity system will provide better protection for thebuilding.
   新的安全系统将为大楼提供更好的保护。
3. 3. The security guard was called to investigatea suspicious package at the airport.
   安全警卫被叫去调查机场的一个可疑包裹。