It is crucial that the upper back and neck are held in an erect position to give support for the head.

重要的是：上背和颈部要挺直以支撑头部，这一点很重要。

《柯林斯英汉双解大词典》

To target the back of the shoulders and also the upper back.

锻炼肩部后部和上背部肌肉。

youdao

Abnormal rearward curvature of the spine, resulting in protuberance of the upper back; hunchback.

脊柱后凸，驼背脊椎不正常地向后弯曲，导致。

youdao

And the fat that comes back reappears in a new area of the body, most noticeably the shoulders, arms and upper abdomen.

VOA: special.2011.07.05

You can see this region here is going to develop into one of the upper limbs, the arms here and the back is different from the front, the spinal cord is developing in the back, whereas, the structures that become our intestinal tract is developing on the other surface.

你能看到这个区域,将会发育成为上肢,这里是手臂,而且身体前后也有不同,脊椎正在后背发育,另外,会成为我们肠管的结构,也在另一个表面发育着

耶鲁公开课 - 生物医学工程探索课程节选

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The pain in my upper back reminded me that I was losing the fight.

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Roughly 50 people have been living in the back upper balcony of the cathedral for more than a week.

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