seat board

例句：

1. 1. The engineer designed the new car with a high-quality seat board.
   工程师设计了这款新型汽车，配备了高品质的座椅板。
2. 2. The student sat in the front row and used the seat board to prop up his books.
   学生坐在前排，用座椅板支撑他的书本。
3. 3.The teacher asked the students to raise their hands when they needed to use the seat board during class.
   老师要求学生们在上课时举手使用座椅板。