Authorities found spaceheaters throughout the home. But the cause of the blaze isn't known.
有关人士称其屋内地暖气机遍布整个房屋。但是，导致这场火灾的原因还未找到。
2
This is not something that most business owners think about, but insurance companies know that extension cords and spaceheaters are major fire hazards.
大多数企业主都不会考虑到这点，但保险公司知道延长线和小型供热器是重大火灾隐患。
3
Some are located in cavernous gymnasiums with only spaceheaters to keep people warm, even as temperatures outside drop to as low as minus-6 degrees Celsius.