"Not to mention that the 5 c. d. c. acknowledged last year that no level of lead is really safe," Dr. Palfrey said.
“更不用说去年疾病控制中心承认，并没有哪个水平的铅含量是真正安全的，”帕尔·弗雷博士说。
"Not to mention that the 5 c. d. c. acknowledged last year that no level of lead is really safe," Dr. Palfrey said.
“更不用说去年疾病控制中心承认，并没有哪个水平的铅含量是真正安全的，”帕尔·弗雷博士说。
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