1.Back up 后退
A: John, could you back up one slide please?
B: Sure.
A:约翰,请退回到上一页好吗?
B:好的。

2. Connect the projector to the computer 把投影仪连接到电脑上
A: How do you connect the projector to the computer?
B: Use the cable. Connect one end to the projector input, and the other end to the computer output.
A:你知道怎样把投影仪连接到电脑上吗?
B:用这根数据线,一边连接投影仪的输入口,另一端连接电脑的输出口。

3.Get out of the presentation 结束演示
A: How do you get out of the presentation?
B: Push Esc, and you’ll be out of the presentation.
A:能告诉我演示完毕怎样退出吗?
B:按 Esc 键,你就可以结束演示了。

4.Input selection 输入选择
A: How come I cannot get the signal?
B: Did you play with the Input Selection?
A:我这儿怎么没有图像呢?
B:你调整输入选择了吗?

5.Plug it in 插电源
A: Did you plug it in?
B: I did. It still dosen’t work.
A:你插电源了吗?
B:插了,但还是不好用。