focus lamp

英 美
  • 聚光灯
  • focus n.焦点;焦距;中心v.(使)集中;聚集
  • lamp n.灯;台灯;油灯;光源
    1. And this is visible by the naked eye with the help at a torchlight or a focused halogen lamp.
      仅仅借助手电筒或是聚光灯用肉眼就能检查出来。