1.No signal 没有信号   

A: Why is there no signal?   

B: Push the Function key and the F4 key at the same time.   

A:为什么没有信号呢?   

B:同时按住功能键和F4键。   

2.Power outlet 电源   

A: Where is the power outlet? 

B: It's usually on the wall. But it seems to be under the table in this room.   

A:知道电源在哪吗?   

B:一般都是在墙上,但这个房间的好像是在桌子下面。   

3.Power strip 电源插排   

A: I think we need a power strip.   

B: Okay. I'll get one right now.   

A:我想我们需要一个电源插排。   

B:好的,我现在就去拿一个。   

4.Make sure 确认  

A: Mike, please make sure that the projector works.   

B: I checked twice already.   

A:迈克,请确认一下投影仪是不是好用。   

B:我已经查过两次了。  

5.Turn on the projector 开投影仪   

A: How do you turn on the projector? 

B: Push the power button. It'll take a while before the projector is ready.

A:怎样开投影仪啊?  

B:按下开关,投影仪开始工作之前要预热一会儿。