I'm not aware that there is such a thing as Southern art," Said Shelby, "At least not if you're defining it by technique.

我并没有意识到,还有以南方为流派的艺术",谢尔比说,"至少没有从艺术技巧方面区分的流派

耶鲁公开课 - 美国内战与重建课程节选

unless you didn't know that, weren't aware of the art market yourself, it would be very important

除非你不知道，自己没意识到艺术市场，重要的是

关于购买艺术品 - SpeakingMax英语口语达人