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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After more than 20 years of service in the Air Force and United States Marine Corps, Glisan tapped that experience and founded Aviation Compliance Testing in 1990.

服务空军和美国海军舰队20多年后，格里桑积累了很多经验并于1990年建立了航空顺应测试站。

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Ironically, Israel has tapped air power more frequently in recent weeks, in part because it's seen as a more pinpoint or precise way of killing rocket-launch teams than artillery fire, which sprays shrapnel over a wide area.

NPR: Israel Apologizes, but Strikes to Continue

When he tapped his volunteers on their chests at the same time as he tapped the air at chest-height below the cameras, they reported feeling that the core of their identity inhabited the camera's position.

ECONOMIST: Consciousness

Slater, just as he was heading towards the deadball line, leapt into the air and tapped Darren Lockyer's kick back towards Smith, who scored underneath the posts.

BBC: England 16-46 Australia