laser pointer
noun/ˈleɪzə pɔɪntə(r)/
/ˈleɪzər pɔɪntər/
- a device in the shape of a pen that sends out a line of light that is used to point to something when making a presentation
笔形状的装置，可发出光线，用于在演示时指向某物 - She highlighted the relevant part of the image with a laser pointer.
她用激光笔突出显示了图像的相关部分。
- She highlighted the relevant part of the image with a laser pointer.