I don't know about that.我可不确定
know about知道; 了解; 听说过有关 ... 的情况
I'd love to know about the plan.
我想知道这个计划。
He's such an ostrich he doesn't want to know about his wife's love affairs.
他真是自己骗自己--对妻子有外遇不闻不问。
I am so obsessed with this whole vampire thing right now.我最近完全迷上吸血鬼小说了
be obsessed with痴迷于 ...
I got obsessed with an idea I called Global Motors.
我老是盘算着搞一个自己的环球汽车公司。
She is obsessed with by fear of unemployment.
她被失业的恐惧所困扰。