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现在,许多家庭都住上了楼房,可是如果遇到停电,上下楼梯就会很不方便,万一不小心踩空了,磕碰、擦伤是难免的。我想
Now, many families live in buildings, but in the event of a power outage, going up and down the stairs can be very inconvenient. In case of accidental trampling, bumps and scratches are inevitable. I think