Nicolle's carbol-crystal violet

例句：

1. 1. Theteacher used carbol-crystal violet to demonstrate the chemicalreaction.
   老师用结晶紫来演示化学反应。
2. 2.The police officer used carbol-crystal violet to identifythe suspect's fingerprints.
   警察用结晶紫来识别嫌疑人的指纹。
3. 3. Thescientist used carbol-crystal violet to study the effectsof light on plant growth.
   科学家用结晶紫来研究光对植物生长的影响。