dienes with conjugated double bonds

例句：

1. 1.Dienes are important in the synthesis of many organic compounds.
   双烯在合成许多有机化合物中起着重要作用。
2. 2. The study of dienes is crucial for understanding the behavior of molecules in certain chemical reactions.
   研究双烯对于理解某些化学反应中分子的行为至关重要。
3. 3. The discovery of new dienes has led to advancements in materials science.
   发现新的双烯带来了材料科学的进步。