Parentheticals Within Parentheses

  edgood  —  Grammar Tips
If you write a parenthetical statement and need to include another parenthetical statement within it, then enclose the second one in brackets:
While visiting Virginia, Dr. Smith and his assistant (Fred Jones, who would later study the state bird [the Cardinal] for the Birdwatchers Society) discovered strange nesting habits undoubtedly caused by global warming.

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