NAK

例句：

1. 1. 网络地址
   Network Address
2. 2. NAK
   No Answer Key，无答案卷
3. 3. NAK
   Not Allowed Key，不允许键入
4. 1. The student's name is written on the NAK form.
   学生的姓名写在NAK表格上。
5. 2. The teacher asked the students to raise their hands if they knew the answer, butno one raised their hand.
   老师问学生如果知道答案就举手，但没有人举手。
6. 3. The exam paper had a NAK printed on it, indicating that the answers were not allowed to be marked.
   考试试卷上有“NAK”字样，表示不允许标记答案。