汤姆，当你离开教室时，别忘了关灯。
Don't forget to turn off the lights when you leave the classroom, Tom.
凯特，你离开房间时别忘了关灯。
Kate, don't forget to turn off the light when you leave the room.
有多少次，你的母亲告诫你在离开房间时要随手关灯，或是不要在想着要吃什么时开着冰箱的门？
How many times has your mother told you to turn off the lights when you leave a room, or to close the fridge door while you decide what to eat.
我们可以节约用水，循环利用教科书，离开教室时随手关灯。
We can conserve water, recycle our textbooks, and turn off lights on leaving our classrooms.
即使是非常简单的小事，如使用再生纸或离开房间时关灯，都会有用。
Even simple things like using recycled paper or switching off lights when you leave the room can help.
离开教室时应随手关灯，关好窗户和锁好门。
Students shall turn off light and lock windows and doors before they leave classrooms.
我总是在离开房间或教室时记得关灯，关电视和电风扇。
I always remember to turn off the lights, the TV and the electric fans when I leave home or the classroom.
当你离开房间时，请记得关灯，不要忘记关掉淋浴，当我们洗完手时，请不要忘记关灯。
Please remember to turn off the lights when you leave the room and don't forget to turn off the shower when we finish washing hands.
当你离开房间时，请记得关灯，不要忘记关掉淋浴，当我们洗完手时，请不要忘记关灯。
Please remember to turn off the lights when you leave the room and don't forget to turn off the shower when we finish washing hands.
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