Teacher: Hi Chuck, today is your turn to make presentation.

Chuck，今天该你做讲解了。

Chuck: OK, let me just get the transparency and projectors ready.

好的，让我先把幻灯片和投影仪准备好。

Chuck: Help, who can tell me how to make it showed in the screen?

谁帮我一下啊，怎么才能投影到屏幕上呢?

Leo: Hi, buddy, just press the F2.

老兄，按F2。

Chuck: How? May I just press the F and TWO at the same time?

怎么按?F和2同时按吗?

Leo: Oh, god. Didn't you see the Key F2 on the top of the keyboard?

我的老天啊，你难道没看到键盘上方的F2键吗?