hot spots on the furnace wall

例句：

1. 1.The hot spots in the market are the new products that are selling well.
   市场上的热点是那些销售良好的新产品。
2. 2. The research team identified several hot spots of interest for further investigation.
   研究团队确定了几个感兴趣的热点区域，需要进一步调查。
3. 3. The hot spots on the wall were caused by the high temperatures and humidity.
   炉墙上的热点是由高温和高湿引起的。