放映机

例句：

1. 1. The teacher showed us how to use the projector.
   老师向我们展示了如何使用投影仪。
2. 2. The movie was so good that I almost forgot about the projector.
   电影太精彩了，我几乎忘了投影仪的存在。
3. 3. The students used the projector to show their presentations.
   学生们使用投影仪来展示他们的演示文稿。