noun🔗Share滚花，节，疙瘩。 A knurl."The mechanic tightened the bolt with a tool that had a knurl to provide a better grip. "技工用一个带有滚花的工具拧紧了螺栓，这样能提供更好的抓握力。thingitemChat with AIVocabulary GamePractice Reading
noun🔗Share小木球 The small wooden ball in the game of trap ball, or knurr and spell."The boy carefully placed the knurr on the trap, ready to launch it with his spell. "男孩小心翼翼地把小木球放在弹射器上，准备用拨棍将它击飞。sportgameitemChat with AIVocabulary GamePractice Reading
