出典:Wiktionary
American quotation (uncountable)
American quotation and its lengthier variants (American-style quotation, etc.) may convey the broad sense or either of the narrow senses, depending upon context, even in the same work.
Relative placing of quotation marks and other punctuation. All signs of punctuation used with words in quotation marks must be place according to the sense. If an extract ends with a point or exclamation or interrogation sign, let that point be included before the closing quotation mark; but not otherwise. ... In regard to other marks, when a comma, full point, colon, or semicolon is required at the end of a quotation, there is no reason for perpetuating the bad practice of their undiscriminating inclusion within the quotation marks at the end of an extract. ... American English. The most significant difference of practice is that ... American publishers would normally place the final quotation mark outside the full point
[I]s it really a simple choice between "the British style" and "the American way"? A trawl through the style guides suggests things are a little more complex than that. ... [T]he first example conforms to American usage. The second example – what Yagoda calls "the British style" – applies only when part of a quotation is given .... "Carefree," in general, means "free from care or anxiety." (米国用法 practice) ... The Guardian would follow the so-called American practice, and I think many British publications would agree with us.