Glasses of water filled to different heights, when tapped, create a vibrating tone due to the water surface affecting the air.
当敲击装着不同高度的水的玻璃杯时，会由于水面影响空气而制造出震动的音调。
Glasses of water filled to different heights, when tapped, create a vibrating tone due to the water surface affecting the air.
当敲击装着不同高度的水的玻璃杯时，会由于水面影响空气而制造出震动的音调。
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