Powerful hind limbs and a large heavy tail serve for balance and support.

它们强有力的后退和粗重的尾巴也起着平衡和支撑作用。

youdao

Powerful hind limbs and a large heavy tail serve for balance and support.

它们强有力的后退和粗重的尾巴也起着平衡和支撑作用。

youdao