Our host ran a long extension cord out from the house and set up a screen and a projector.

我们的主人从那所房子里牵出了一条长的延长导线，安置了一块屏幕和一个投影仪。

《柯林斯英汉双解大词典》

A projector shines a map of the vein network directly on the skin.

投影仪将静脉网络的分布图直接投射到皮肤上。

youdao

He refused to develop projection technology, reasoning that if he made and sold projectors, then exhibitors would purchase only one machine—a projector—from him instead of several.

他拒绝研发投影技术，理由是：如果他研发并且销售放映机，电影放映者们就只会从他那里买一台机器，而不是几台。

youdao

We didn't have that in the eight-millimeter days. We had to lug a projector, we had to plug it in to somebody's wall, put up a screen and show it to someone patient enough to sit there for five minutes and watch.

VOA: special.2011.06.20

Nobody is going to say to themselves, "Oh, well, it's not such a good talk because the slide projector broke."

没有人会觉得，”这个演讲不是很好，因为投影机坏了“

耶鲁公开课 - 心理学导论课程节选

If you were giving a job talk-- and this is for people in graduate school particularly-- If you were giving a job talk and the slide projector breaks, you're screwed.

如果你要做一个职业演讲-,特别是给研究生院做-,如果你正在做演讲，结果投影机坏了，你完蛋了。

耶鲁公开课 - 心理学导论课程节选

My netbook comes with two USB ports and an external port for connecting in a projector.

FORBES: In Praise Of...The Netbook?

They choose a hall and then they put a projector, and then they can screen the movie.

NPR: 'Yesterday': The Saga of an African AIDS Victim

Update: It's actually a Microsoft Research project that uses a Kinect for a Windows camera combined with a projector.

ENGADGET: Microsoft and Samsung demo Illumiroom display, fills room with images (video)