Also, you can think of it like water polo ball. If you take a water polo ball in the water, put your hand on it and press it down, you get pressure up against it that come up.

你也可以想象成一只水球，如果你拿个水球放在水中，把手放球上向下压，你就会得到上升的反作用力。

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The ball rocketed more than 300 feet off the ground, and far beyond the right field roof of the Giants' Polo grounds-a blast later estimated at 475 feet (144.8 metres).

球迅速飞升至离地300英尺以上，远远超出了巨人队波洛体育场的右野场顶，后来的爆炸估计发生在475英尺处(144.8米)。

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A long - handled implement used to strike a ball, as in croquet and polo.

球棍一种用于击球的长手柄器具，如在槌球和马球中。

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The animals must not lie down in front of the goal or pick up the polo ball with their trunks, or the opposing team gets a free hit.

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Buzkashi is akin to polo, but players on horseback use a headless goat carcass instead of a ball.

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The ancestor of polo, this traditional game of horsemen is played with a dead goat rather than a ball.

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