The first find was a humerus, or upper arm bone, of a giant ground sloth.
第一个发现是巨型树懒的肱骨，或上臂骨。
He fell and fractured his upper arm.
他跌了跤，并且折断了上臂。
The upper arm prosthesis system is a complex man-machine system.
上臂假肢系统是一个复杂的人一机系统。
Wrap a few loops of the bandages around my upper arm, then twist.
用绷带在我手臂上绕几圈，然后绷紧。
Train Triceps, avoid loose, flabby upper arm. Improve muscle tone.
练习肱三头肌，防止上臂肌肉松弛。
Upper arm: Measure around the largest part of each arm above the elbow.
上臂：测量手肘以上每条手臂最粗的地方。
Upper arm: Measure around the largest part of each arm above the elbow.
上臂：测量手肘以上每条手臂最粗的地方。
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