手臂怎么用英语怎么说

手臂用英语可以说作 arm。
来源：
手臂这个词源自拉丁文的 "brachium"，意为 "手臂" 或 "上臂"。它演变成英语中的 "arm"，并逐渐普及至今。
例句：
He lifted his arm to wave at me. (他抬起手臂向我挥手。)
She felt a sharp pain in her arm. (她感到手臂一阵剧痛。)
He has a tattoo on his arm. (他手臂上有一个纹身。)
The doctor checked her arm for broken bones. (医生检查她的手臂是否骨折。)