To reject past views or practices in favor of present ones; to consider past actions or ideas as wrong and current ones as right.
随着时代的发展，人们对健康饮食的认识也在不断进步，许多非昔是今的观念逐渐被接受。
As society develops, people's understanding of healthy eating constantly improves, and many concepts where past views are rejected in favor of present ones are gradually being accepted.
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