Word关掉guāndiàoMeaningto turn offPart of speechverbPronunciationCourseHardcore ChineseLessonLesson 23Usages of guāndiào为了wèile 节省jiéshěng 能源néngyuán， 学校xuéxiào 晚上wǎnshang 十shí 点diǎn 以后yǐhòu 关guān 掉diào 很多hěnduō 灯dēng。wèile jiéshěng néngyuán, xuéxiào wǎnshang shí diǎn yǐhòu guān diào hěnduō dēng.To save energy, the school turns off many lights after ten o’clock at night.