in/over the course of…(used with expressions for periods of time与表示时间段的词组连用)during在…期间;在…的时候He's 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 faces major challenges over the course of the next few years.这家公司今后几年将面临重大的挑战。 |