基本解释n.指关节骨；膝节骨同根派生 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. 他的胳膊活像一只破损的指南针，早已不再是一条胳膊，却成了加上一条胫骨的指关节了。knucklebone更多例句