是一种用来浏览幻灯片的投影机，有主要四个组成元件：利用风扇冷却的灯泡（或其他光源）、反射镜和聚集光束镜头、幻灯片载盘以及聚焦镜片。在聚焦镜片和幻灯片中间装有一片吸收热能的玻璃，以防止幻灯片损坏，此玻璃可让可见光波通过并吸收红外线。
至少在投影仪的灯泡爆了之前，幻灯片还不错。
At least the slides were good, that is, until the bulb in the projector blew.
这种观察接二连三的发生，我就像一部投影仪一样从男人们的视角去看来自他们的幻灯片。
These observations clicked into place in quick succession; I felt like a projector being loaded with slides of maleness, of male seeing.
用投影仪或者幻灯片来做陈述也许很快就会显得过时了。
Presentations with overhead projection or slides may soon look old-fashioned.
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