NR

例句：

1. 1. NR is a common term for "no" in English.
   NR 是英语中表示“不”的常用词。
2. 2.The teacher asked the students to raise their hands if they knew the answer.
   老师要求学生举手，如果他们知道答案的话。
3. 3.The new product has received positive reviews from customers.
   新产品已经得到了顾客的积极评价。