adv.猛烈地；厉害地
The enemy attacked fiercely, but the line held firm. 敌人猛烈进攻，但防线巍然不动。
The two armies were fiercely engaged for several hours. 两军激战达数小时。
My head hurts fiercely and snivels. 我头痛得厉害，还流鼻涕。
