So biomedical engineers have been working for many years on how to design replacement parts for joints like the hip: the artificial hip is the most well developed of those.

因此,生物医学工程师花了很多年时间,致力于设计像髋关节这样的关节替代品,尤以人工髋关节的研究最为成熟

耶鲁公开课 - 生物医学工程探索课程节选

It's rather than working on isolating the parts and trying make one part of your body big,

这不是单独练习各个部分，试图把某一部分的肌肉练得很大，

要拥有好身材 - SpeakingMax英语口语达人