David Williamson, an epidemiologist at the Centers for Disease Control and Prevention (CDC), was the lone exception.

唯有美国疾病预防控制中心的流行病学家戴维·威廉姆森例外。

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David Williamson, an epidemiologist at the Centers for Disease Control and Prevention (CDC), was the lone exception.

唯有美国疾病预防控制中心的流行病学家戴维·威廉姆森例外。

youdao