specialised conventional sulfur dye

例句：

1. 1. The team is specialised in thefield of renewable energy.
   该团队专门从事可再生能源领域。
2. 2. The chef has a specialisedknowledge of cooking techniques.
   这位厨师对烹饪技巧有专精的知识。
3. 3. Thecompany is specialised inproducing high-quality electronic devices.
   该公司专门生产高质量的电子设备。