surveillance zone

英 美
  • 监视区
    1. The unnecessary surveillance regions in the image can be masked.
      多余的监视区在图象可能被掩没。
    2. A three-kilometer exclusion zone has been established around the affected farm as well as a ten-kilometer surveillance area.
      在受感染农场周围已经建立起三千公里的隔离区以及一万公里的监视区。