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Pendulum
01
振り子
a device with a long thin bar and a weight at the end that swings side to side to keep a clock working
例
The pendulum’s movement follows Newtonian principles of motion.
The pendulum swung back and forth, oscillating steadily over time.
The pendulum swung to and fro, marking the passage of time in the old clock.
The pendulum swung back and forth, marking the passage of time.
The scientist studied the motion of the pendulum to understand the principles of physics.
