direct-writing recorder

例句：

1. 1. This direct-writing recorder is perfect for recording lectures.
   这个直接书写记录器非常适合录制讲座。
2. 2. The teacher used a direct-writing recorder to help students understand the material better.
   老师使用了一个直接书写记录器来帮助学生更好地理解材料。
3. 3. The student was able to use the direct-writing recorder to take notes during the presentation.
   学生能够使用直接书写记录器在演讲期间做笔记。