WRAAC

例句：

1. 1. I'm not sure what the WRAAC stands for.
   我不确定WRAAC是什么意思。
2. 2. The WRAAC is responsible for monitoring air quality in the area.
   WRAAC负责监测该地区的空气质量。
3. 3. The WRAAC has issued a warning about the potential dangers of the storm.
   WRAAC已经发布了关于暴风雨潜在危险的警告。