研究生导师一对一指导简介：Su Can, who was sitting by the window in the classroom, was holding his cheek with one hand. He seemed to be listening intently to the Chinese teacher on the stage, but his mind had already wandered outside.
Su Can, who was sitting by the window in the classroom, was holding his cheek with one hand. He seemed to be listening intently to the Chinese teacher on the stage, but his mind had already wandered outside.
