Because I have very little cartilage under my right knee cap, it's almost bone on bone.

因为我的右膝髌骨软骨已经所剩不多了，现在都快是骨头对骨头了。

youdao

On the one hand, a decrease in bone hardness can increase the risk of fractures. On the other hand, the surgery might improve bone health.

一方面，骨骼硬度下降会增加骨折的风险，另一方面，手术可以改善骨骼健康。

youdao

At the site, one lone survivor sat with his back against a tree, chewing on a bone. As he tossed the bone onto a huge pile of bones, he noticed the rescue team.

在飞机坠毁的地方，仅剩的那位幸存者倚靠在树旁，把刚刚啃光的骨头扔到旁边的骨头堆里，这时，他看到救援队到来了。

youdao

The astronauts' decrease in bone strength measured from point six percent to five percent for each month spent on the space station.

VOA: special.2009.03.10

Maybe you have to bone up on your test-taking skills.

你应该提升一下应试技巧。

麻省理工公开课 - 固态化学导论课程节选

T-Bone Burnett has also written and performed on Costello's albums.

VOA: special.2010.11.12

Of 62 patients whose prostate cancer had spread to the bone, 53 saw improvement on their bone scans.

FORBES: Biotech Busts And Breakthroughs For February

Consumers who wish to exercise extra caution can follow the advice presented by the Web-based consumer advocacy group Consumeraffairs.com, which advises the avoidance of brains, neck bones and beef cheeks, bone marrow and cuts of beef that are sold on the bone.

CNN: USDA quarantines 2 farms in mad cow investigation

The combination of positive stress on bone from aerobic and strength training leads to stronger, denser and more functional bone.

FORBES: Why Strength Training May Help You Live Longer