John doe 尤其是美国,对于无名的人都是这个可以,John doe number 1, John doe number 2.....The name "John Doe" is used as a placeholder namein a legal action, case or discussion for a male party, whose trueidentity is unknown or must be withheld for legal reasons. The name isalso used to refer to a male corpse or hospital patient whose identity is unknown. This practice is widely used in the United States and Canada, but is rare in other English-speaking countries (including the United Kingdom itself, from where its use in a legal context originates – see Origin below).
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