copying tool

例句：

1. 1. The engineer uses a copying tool to make accurate copies of documents.
   工程师使用一个复制工具来制作准确的文件副本。
2. 2. The teacher demonstrated how to use a copying tool for students to practice their skills.
   老师演示了如何使用复制工具，让学生练习技能。
3. 3. The company has developed a new copying tool that can save time and effort in data entry.
   该公司开发了一种新的复制工具，可以在数据输入中节省时间和努力。