sand bedding course

例句：

1. 1. The sand bedding course is designed to teach students how to build a sandcastle.
   沙滩课程旨在教授学生如何建造沙堡。
2. 2. The beach was crowded with people enjoying the sand bedding course.
   海滩上挤满了享受沙滩课程的人们。
3. 3. The sand bedding course is an excellent way for children to learn about the ocean and its ecosystem.
   沙滩课程是让孩子们了解海洋及其生态系统的绝佳方式。