I don't know about that.我可不確定
know about知道; 了解; 聽說過有關 ... 的情況
I'd love to know about the plan.
我想知道這個計劃。
He's such an ostrich he doesn't want to know about his wife's love affairs.
他真是自己騙自己--對妻子有外遇不聞不問。
I am so obsessed with this whole vampire thing right now.我最近完全迷上吸血鬼小說了
be obsessed with癡迷于 ...
I got obsessed with an idea I called Global Motors.
我老是盤算著搞一個自己的環球汽車公司。
She is obsessed with by fear of unemployment.
她被失業的恐懼所困擾。