单词	pebble
释义	pebblepebble /ˈpɛbəl/ ●○○ noun [countable] Etymology ETYMOLOGYpebble Origin: Old English papolstan, from papol (perhaps from the sound of small stones hitting against each other) + stan stone a small smooth stone found on the beach or on the bottom of a river—pebbly adjective
随便看	rockiness rocking chair rocking horse rock music Rockne, Knute rock 'n' roll rock properties rock salt rock-solid rock-steady Rockwell, Norman rocky Rocky Mountains, the rococo rod rode rodent rodeo Rodgers, Richard Rodin, Auguste roe roentgen Roentgen, Wilhelm Roethke, Theodore Roe v. Wade

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