将提供台式计算机、屏幕、投影仪和扬声器。
A desktop computer, screen, projector, and loudspeakers will be available.
该演示(针对初学者)可让您了解典型台式计算机的各个部件：主机、监视器、鼠标、键盘、打印机和扬声器。
This demo, aimed at beginners, takes you on a tour of the parts of a typical desktop computer: the case, monitor, mouse, keyboard, printer, and speakers.
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