acid ponceau

例句：

1. 1. The acid ponceau stain is used to highlight the outlines of objects in a photograph.
   酸性品红染色剂用于在照片中突出物体的轮廓。
2. 2.Acid ponceau is commonly used as a marker for drawing on paper.
   酸性品红常被用作在纸上作图的标记。
3. 3. In scientific research, acid ponceau is often used to stain biological samples for microscopic analysis.
   在科学研究中，酸性品红常被用来对生物样本进行显微分析的染色。