n.投影仪(全写为overhead projector)

原形：OHP复数：OHPs

OHP stands for Overhead Projector.
OHP代表Overhead Projector（投影仪）。
The teacher used the OHP to show slides during the lecture.
老师在讲座中使用了投影仪展示幻灯片。
Can you turn on the OHP and adjust the focus?
你能打开投影仪并调整焦距吗？
The OHP is an essential tool for presentations in many classrooms and conference rooms.
投影仪是许多教室和会议室进行演示的必备工具。
Make sure the transparency film fits properly in the OHP before turning it on.
在打开投影仪之前，确保透明胶片已正确放入。
The bulb in the OHP needs to be replaced as it's not projecting clearly anymore.
投影仪中的灯泡需要更换，因为它不再清晰地投影了。
We'll use the OHP to display the graphs and charts during the meeting.
我们将在会议期间使用投影仪显示图表。
Please connect your laptop to the OHP so we can view your presentation.
请将您的笔记本电脑连接到投影仪，以便我们可以查看您的演示文稿。
Don't forget to turn off the OHP after the presentation is over.
演讲结束后别忘了关掉投影仪。
The OHP was once a common piece of equipment in schools, but now many have been replaced by digital projectors.
投影仪曾是学校中常见的设备之一，但现在许多已被数字投影仪取代。