Make sure all the lights and other electrical appliances are turned off when there's no one in the classroom or at home. When there's no need for lights during the day time, don't turn them on.
英语翻译"教室或家中无人时一定要确保关上灯和其他电器,白天无须开灯时不要开灯."...整句...
Make sure all the lights and other electrical appliances are turned off when there's no one in the classroom or at home. When there's no need for lights during the day time, don't turn them on.