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rule; regulation
settlement; conclusion; end; agreement; arrangement
habit; custom; habitual way
countenance in front of another person; face
学校の決まりを守りましょう。
Let's follow the school rules.
決まりを破ってはいけません。
You must not break the rules.
来月から新しい決まりができるそうだ。
A new regulation has been established.