pallograph

例句：

1. 1. The technician was busy repairing the old typewriter.
   技术员正在修理旧打字机。
2. 2. The typewriter is one of the most popular tools in the office.
   打字机是办公室中最流行的工具之一。
3. 3. The technician carefully replaced the typewriter parts to fix the machine.
   技术员小心翼翼地更换了打字机零件以修复机器。