单词：deleaded
音标：[di:'led] ；
vi. 去铅
单词：deleaded 相关文章
Absurdly, he was excluded from a 1971 National Research Council panel appointed to investigate the dangers of atmospheric lead poisoning even though he was by now unquestionably the leading expert on atmospheric lead. 荒唐的是，一个美国研究委
发表于:2019-02-17 / 阅读(114) / 评论(0)
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