1.No signal 沒有信號
    A: Why is there no signal？
    B: Push the Function key and the F4 key at the same time.
    A：為什么沒有信號呢？
    B：同時按住功能鍵和F4鍵。
    2.Power outlet 電源
    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：知道電源在哪嗎？把商務(wù)英語頁面加入收藏夾
    B：一般都是在墻上，但這個房間的好像是在桌子下面。
    3.Power strip 電源插排
    A: I think we need a power strip.
    B: Okay. I'll get one right now.
    A：我想我們需要一個電源插排。
    B：好的，我現(xiàn)在就去拿一個。
    4.Make sure 確認(rèn)
    A: Mike, please make sure that the projector works.
    B: I checked twice already.
    A：邁克，請確認(rèn)一下投影儀是不是好用。
    B：我已經(jīng)查過兩次了。
    5.Turn on the projector 開投影儀
    A: How do you turn on the projector?
    B: Push the power button. It'll take a while before the projector is ready.
    A：怎樣開投影儀??？
    B：按下開關(guān)，投影儀開始工作之前要預(yù)熱一會兒