noun 下载 🔗分享 肱骨, 上臂骨. The bone of the upper arm. Examples : "The doctor said Maria broke her humerus when she fell off her bicycle and landed on her arm. " 医生说玛丽亚骑自行车摔倒,手臂着地的时候,摔断了肱骨,也就是上臂的骨头。 anatomy body medicine organ 与AI对话词汇游戏阅读练习