If you suspect a gas leak, do not strike a match or even turn on an electric light.
假如你怀疑有煤气泄漏，不要划火柴，甚至连电灯都不要开。
If you shine a light on your belly now, your baby will turn her head.
如果你对着肚子照下光，你的宝宝会转动她的头。
If you shine a light on your belly now your baby will turn her head.
如果你对着肚子照下光，你的宝宝会转动她的头。
Because of the great speed of light, we see a lamp light up almost at the exact moment we turn it on.
由于光速极快，我们几乎能在开灯的那一瞬间就看见电灯亮起来。
旋转的红色警告光。
Turn on a night light if necessary.
必要时打开小夜灯。
Loose wires, especially in the breaker box, can make a light turn on spontaneously.
开关箱里的电线常会松动，这就会导致电灯自己亮了。
Do me a favour. Turn on the light, will you?
帮我个忙，把灯打开好吗？
I turn on a switch but the light had burnt out.
我打开电源，但电灯已经烧坏了。
I turn on a switch but the light had burnt out.
我打开电源，但电灯已经烧坏了。
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