medial deltoids 中头肌
Populus deltoids Marsh 美洲黑杨
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同义词： deltoid muscle musculus deltoideus
以上来源于: WordNet
N the thick muscle forming the rounded contour of the outer edge of the shoulder and acting to raise the arm 三角肌
ADJ shaped like a Greek capital delta, Δ; triangular 三角形的
Gradually he felt his deltoids becoming sore.
渐渐他觉得两臂上的三角肌发酸。
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The anterior deltoids over the front of the shoulder lift the arms.
三角肌（位于肩膀前侧）上提手臂。
The middle portions of the deltoids abduct the shoulders, drawing them away from the trunk.
三角肌中部使肩膀外展，将肩膀向远离躯干的方向拉。
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