塔夫斯大学埃利奥特·皮尔森儿童发展部的唐纳德·沃特莱博教授警告说，这样的惩罚会对孩子的情感造成极度伤害。
Donald Wertlieb, a professor of child development at the Eliot-Pearson Department of child development at Tufts University, warned that such punishment could do extreme emotional damage.
唐纳德·沃斯特是美国著名的环境史学家，对世界环境史研究作出了突出贡献。
Donald Worster is a leading environmental historian in the United States who has made a great contribution to the studies of world environmental history.
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