将“ball and socket"翻译成中文

However, unlike most other mammals, the giraffe has elongated vertebrae designed in a special ball-and-socket formation, providing remarkable flexibility.

可是,它们跟很多哺乳动物不同的是,它们椎骨伸长,设计成独特的球窝关节,令它们的颈项能够活动自如。