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，这一点在91视频中也有详细论述
Might the linkage between “stuff of iron” and “surety to those that are in doubt,” likewise, have an ancient pedigree via gestural traditions? Notable here is the fact that one of the oldest known fairy tales involves iron-working: “The Smith and the Devil.” A study from 2013 concluded that this story template, which associates iron-working skill with magic, was traceable back at least 6,000 years.
Source spans on every AST node. Every expression, pattern, and type