Scientists believe that we just need to turn on a printer in the kitchen and then we can enjoy our favourite food whenever we like.(科学家们认为，我们只要在厨房里打开一台打印机，就可以随时享用我们最喜欢的食物。)
Please turn on the electric fan to air the room.(请打开电风扇让房间通风。)
You should connect the hose to the tap and then turn on the water.(你应当先把软管连接在水龙头上，然后再打开水源。)
Please help me turn on the light.(请帮我把灯打开。)
Turn on the shower and have a bath.(打开淋浴并洗澡。)
Turn on your desk light and there is enough light.(打开你的桌灯就会有足够的光线。)
I wish I knew how to turn on the heating.(要是我知道如何打开暖气装置就好了。)
Turn on the light because it is too dark to see.(太暗了看不见，把电灯打开。)
