in course of 在……的过程中,在……中
如：The new textbook is in course of preparation.新教科书正在准备之中.
in the course of = during 在……期间,在……的时候
如：He has seen many changes in the course of his long life.他在漫长的一生中目睹了许许多多的变化.
The company will face major challenges in the course of the next few years.这家公司以后几年将面临重大的挑战.