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revision (of a rule, price, etc.); alteration; change
来年度から教科書の改定が実施される予定だ。
A revision of the textbooks is scheduled to be implemented from the next academic year.
運賃の改定について利用者から多くの意見が寄せられた。
Many opinions were received from users regarding the fare revision.
規則の改定には委員会での承認が必要となる。
Revision of the rules requires approval by the committee.