基本解释n.指關節骨；膝節骨同根派生 knucklebone相关词英汉例句His arm looks like a broken compass;it's not an arm any more, but a knucklebone with a shank attached. 他的胳膊活像一衹破損的指南針，早已不再是一條胳膊，卻成了加上一條脛骨的指關節了。knucklebone更多例句