environmental activity

• 环境放射性

environmental activity的用法和样例：

例句

1. The practices and experiences of environmental radioactivity investigation and research in Mongolia and Romania are useful to perform similar investigation and research in China.
   蒙古和罗马尼亚两国环境放射性调查的实践与经验对我国类似的工作具有借鉴意义。