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。
His arm looks like a broken compass; it's not an arm any more, but a knucklebone with a shank attached.
它在你的腕关节处绘制一个圆圈，并且要求装置在你的胳膊上投射出一个数字钟——开玩笑的说，这是全世界最轻的手表了！
Tracing a circle on your wrist tells the device to project a digital clock on your arm - the world's lightest wristwatch, a fan joked.
“我对胳膊外露格外敏感，我的肘关节看起来像90岁老太婆的，”她说。
"I'm really self-conscious about showing my arms. My elbows are like a 90-year-old's," she says.
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