多年来，臀部关节和身体其他关节都是可以部分或完全替换的。
For many years hip-joints and other body joints have been replaceable either partially or completely.
安装的EAR完全替换为新的EAR。
The installed EAR will be completely replaced with the new EAR.
而是被设计成巨大的橡胶带，完全替换钢制履带。
Instead, they are crafted into enormous rubber bands that replace the steel tracks completely. The Danes are converting their entire APC fleet to rubber tracks.
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