The facial musculature used to express both emotions is exactly the same.用来表达这两种情绪的面部肌肉系统是完全一样的。By looking at the bones of this animal, we can discover quite a lot about its musculature.通过观察这种动物的骨骼，我们可以了解其肌肉系统的不少特点。Both had the musculature of men who spent hours with a sword.两人都有长时间用剑者所独有的肌肉系统。