earth hour a global event asking households and businesses to turn off their non-essential lights and other electrical appliances for one hour to raise awareness towards the need to take action on climate change
“地球一小时”是一项全球性活动，要求家庭和企业关掉不必要的灯和其他电器一小时，以提高人们对气候变化采取行动的必要性的认识
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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