狮子的凶猛让其他动物不敢靠近。

The ___fierceness of the lion kept other animals at a distance.

暴风雨的猛烈程度让所有人都感到震惊。

The ___fierceness of the storm shocked everyone.

她演讲时的激情让观众深受感动。

The ___fierceness of her speech moved the audience deeply.