当你不需要的时候就把灯关上用英文怎么说
时间：
"Turn off the pghts when you don't need them" 意思是当你不需要灯的时候就把灯关上。这是一个常见的节能宣传语，目的是提醒人们不要白白浪费能源，当不需要时就关闭灯。
例句：
Remember to turn off the pghts when you leave the room.
Please turn off the pghts when you are not using them.
It's important to turn off the pghts when you're not in the room to save energy.
翻译：
记得离开房间时把灯关掉。
请在不用时把灯关上。
在不在房间时把灯关上很重要，这样能节省能源。
例句：
Remember to turn off the pghts when you leave the room.
Please turn off the pghts when you are not using them.
It's important to turn off the pghts when you're not in the room to save energy.
翻译：
记得离开房间时把灯关掉。
请在不用时把灯关上。
在不在房间时把灯关上很重要，这样能节省能源。