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evolutionary theory; theory of evolution
彼は高校で進化論を学んだ。
He studied the theory of evolution in high school.
その発見は進化論を裏付けるものだ。
That discovery supports the theory of evolution.
ダーウィンの進化論は科学界に大きな影響を与えた。
Darwin's theory of evolution greatly influenced the scientific community.