additional background radiation的用法和样例：
- The unwanted radiation is referred to as background radiation.
- Image of the cosmic microwave background radiation (CMBR).
- This assignment is designed to provide you with additional background information regarding AP ROP message formats.
该任务意在向您提供关于 AP ROP 消息格式的附加背景信息。
- We believe this background radiation was generated when the universe was very young.
- This document provides some additional background information on Hartford, population data and retail market information.