double helical double-reduction unit

例句：

1. 1. The DNA double helix structure is the basis of genetics.
   DNA的双螺旋结构是遗传学的基础。
2. 2.The discovery of double helical structures in proteins has led to breakthroughs in drug design.
   蛋白质中双螺旋结构的发现推动了药物设计的重大突破。
3. 3.The double helical structure of DNA is responsible for its ability to replicate itself.
   DNA的双螺旋结构使其能够自我复制。