infrared spotlight

例句：

1. 1. The engineer used an infraredspotlight to illuminate the dark room.
   工程师使用一个红外聚光灯来照亮黑暗的房间。
2. 2. Theinfrared spotlight was used to detectthe presence of a hidden object.
   红外聚光灯被用来探测隐藏物体的存在。
3. 3. The infrared spotlight helped the team to locatethe lost child quickly.
   红外聚光灯帮助团队迅速找到了失踪的孩子。