Notices to all students.

This is the foreign teachers' rest room.
Please scrub your hands thoroughly before using these computers. Keyboards can transmit infectious diseases which can kill.

Oh Dear, nobody seems to want to answer you, so I'd better do so myself...although, it might be better to kick them students out of your rest room hahaha. However, this is what you want:-

全体学生请注意

这是外教的休息室。使用电脑以前请擦手。 为键盘可 播疾病 ！