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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"How one behaves when one meets the Queen is fairly self-evident and obvious, " said David Williamson, co-editor of Debrett's (the last word in social etiquette).

BBC: By BBC News Online's Liz Doig

Thanks to Bernard Levine, Hillel Markowitz, Tony Lima, Lynn Bateman, David Hallstrom, John Bobek, Ethel Fenig, David Gerstman, Ed Grinberg, Mark Nicholas, Tristan Pinnock, Bill Bredesen, Eric Jensen, John Williamson, Kyle Kyllan, Miguel Rakiewicz, Gregg Geil, David Hoffman, Ronald Morris, Bryan Fischer, J.

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