绿色表盘，有一种淡雅尊贵的感觉，送女朋友的不二之选，时间精准程度自然不用说 The usual British word for this is course : a course in business administration . Class can also mean one of the periods hinein the school day when a group of students are taught: What time is your next class? British speakers also use lesson for this meaning, https://claytonoyipx.idblogmaker.com/32925898/the-definitive-guide-to-mix