Coursenn.库尔森
coursen.课程;讲座;过程;路线;一道(菜)v.跑过,穿过;追赶;快跑
course selecting选课
course stability航向稳定性
course judgement课程评价
course slructure课程结构
course designing课程设置
course deviation航向偏差
course-keeping航向保持
Courses Building课程建设
courses training实践教学
courses features课程构成特点