Indeed, they report, FSH stimulates receptors found on the surface of bone-degrading osteoclasts and their precursors, leading to the bone cells' formation and function.

事实上，FSH刺激破骨细胞和破骨细胞前体细胞表面的受体，促进骨细胞产生及发挥功能。

youdao

Stress fractures, or tiny cracks in the surface of a bone, are serious running injuries that requires immediate treatment.

应力性骨折，或者在骨头表面上的微小裂缝，是严重的跑步受伤，并且需要立即治疗。

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Brought about by the constant pressure of lying on a stationary surface, painful ulcers can involve substantial skin loss, sometimes exposing muscle and even bone.

由于躺在静止的平面上持续产生的压力，疼痛性溃疡会伴随大面积皮肤脱落，有时露出肌肉，甚至骨头。

youdao

Her partial prosthesis had worn through the bone on the lower surface of her knee.

NEWYORKER: Big Med

The surface of the road still needs work, but the improvements already mean that a bone-shaking two day journey has been turned into a very dusty but manageable 12-hour drive.

BBC: In the shadow of the Taleban

Doctors at the Rizzoli hospital stressed that they also took great care not to ruin the face of the donor, substituting the removed bone with a wax mould, and avoiding making any surface cuts to the deceased's face.

BBC: Doctors perform jaw transplant