About three things I was absolutely positve. First, Edward was a vampire. Second, there was a part of him, and I didn't know how dominant that part might be that thirsted for my blood. And third, I was unconditionally and irrevocably in love with him.
1、sb. be absolutely positive某人完全可以肯定
2、vampire 吸血鬼
3、revoke v.撤销,取消
revocable adj.可撤销的,可挽回的
irrevocable adj.不可撤销的,不可挽回的
irrevocably adv.不可挽回地,彻底地