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| “Three-stone fires are about the worst you can do for cooking efficiency,” he said. The fires convert less than 8 percent of the wood's potential energy into heat for the stove. |
中文意思：
“三石生火法对做饭来说效率是最差的，”他说。这种生火方法转化的能量还不到柴火可能有的转化为炉子里热能的能量的8%。 |
以下为相关句子列表(点击查看，可以看对应的解释）：
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