diode laser pointer

例句：

1. 1.This diode laser pointer is perfect for illuminating dark corners.
   这个二极管激光指针非常适合照亮暗角。
2. 2.The teacher used the diode laser pointer to demonstrate the concept of light waves.
   老师使用二极管激光指针来演示光波的概念。
3. 3.The student pointed out the diode laser pointer as a useful tool for studying.
   学生指出二极管激光指针是一个有用的学习工具。