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School bell
01
スクールベル
a mechanical or electronic device used to signal the start and end of classes or periods in a school day
例
The school bell rang, signaling the end of recess and the start of the next class.
The custodian adjusted the timing of the school bell to ensure classes started promptly each morning.
The principal announced over the intercom that the school bell schedule would be adjusted for the upcoming assembly.
She glanced at the clock, waiting for the school bell to announce the end of the school day.
The students lined up in the hallway when they heard the school bell indicating the end of lunch.
