但骨痛，尤其是膝盖骨关节炎仍然让很多研究者束手无策。

But aching bones still leave researchers perplexed. Osteoarthritis of the knees presents a particularly serious problem.

youdao

但骨痛，尤其是膝盖骨关节炎仍然让很多研究者束手无策。

But aching bones still leave researchers perplexed. Osteoarthritis of the knees presents a particularly serious problem.

youdao