单词：projectors
n. an optical instrument that projects an enlarged image onto a screen
projectors的用法和样例：
例句
- MEGAPOWER projectors are the ultimate solution to all your projection needs.投影机的最终办法是所有你预计需求。
- CSC hereby requests the users to turn off the projectors and computers after use.资讯中心特此请求各使用者在使用完毕后顺手关掉投影机及电脑。
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