Soren Andreasen, a social scientist at Dalberg Global Development Partners who supervised the writing of the report, defended it, saying that it was clear that the numbers were rough estimates.
索伦·安德瑞森是一名社会科学家，在达尔伯格全球发展伙伴公司负责监督报告的撰写，他为它进行辩护，称这些数字显然是粗略估计的。
Wouter Deelder of Dalberg, a development consultancy, says that stoves have improved in everything from the materials used to the design of chimneys.
开发咨询公司Dalberg的沃特·迪尔德表示，炉子从使用的材料和烟囱的设计都得到了全面改进。
Wouter Deelder of Dalberg, a development consultancy, says that stoves have improved in everything from the materials used to the design of chimneys.
开发咨询公司Dalberg的沃特·迪尔德表示，炉子从使用的材料和烟囱的设计都得到了全面改进。
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