define tape file command

例句：

1. 1.The teacher defined the problem clearly.
   老师清楚地定义了这个问题。
2. 2. He defined his position in the company clearly.
   他清楚地定义了自己在公司中的位置。
3. 3. She defined her goals for the year clearly.
   她清楚地定义了今年的目标。