v.着迷；困扰
Entrepreneurs must know their competition, but not obsess over it. 企业家必须了解他们所面临的竞争情况，但是也不必过分沉溺于其中。
The fear of death obsessed her throughout her old age. 她晚年一直受著死亡恐惧的困扰。
For many people, it's easy to obsess over minor issues. 很多人被细小的问题所困扰。
