Measure from the tip of one shoulder, horizontally across the back, to the tip of the other shoulder.

测量从一肩的一端，经整个水平背部，到另一肩膀的末端。

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Press your shoulder blades into your back, then widen them across and release them down your back.

肩胛骨压向背部，然后扩展并放松肩胛骨到背部。

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The boy put the dog over his shoulder and started to walk back across the pond.

男孩将狗狗扛到肩上，淌过池塘往回走。

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