Medium of Instruction 授课语言。 To teach a lesson to; instruct. 向…授课;教 He augments his income by teaching in the evenings. 他靠夜间授课增加收入。 She gives private lessons to supplement her income. 她给私人授课以贴补收入。 The diffusion of knowledge through books and lectures 通过书本和授课进行的知识传播