蒙古游牧家庭用上太阳能，告别煤油灯
Many families in Mongolia live on the grassland. They move with their animals four times a year. They have no power lines nearby. For a long time, they used kerosene lamps at night.
Now a new thing helps them. Small solar panels give them light. The sun shines very strongly on the grassland. A small panel can power a lamp and charge a phone.
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