temperature indicating crayon

例句：

1. 1. This is a temperature-indicating crayon that can show the temperature on the paper.
   这是一支可以显示纸上温度的指示蜡笔。
2. 2. The teacher used this temperature-indicating crayon to help the students understand the concept of temperature.
   老师用这支指示蜡笔帮助学生理解温度的概念。
3. 3. The student used the temperature-indicating crayon to draw a picture of the sunand the earth's atmosphere.
   学生用指示蜡笔画了一幅太阳和地球大气的图。