instruction address source

例句：

1. 1. The teacher gavethe students a detailed instruction on how tosolve the problem.
   老师给学生详细地说明了如何解决这个问题。
2. 2. She followed the instructions carefully tocomplete the task.
   她仔细地按照指示完成了任务。
3. 3. The company issued new instructions forits employees to follow.
   公司发布了新的员工指导方针。