twinning law

例句：

1. 1. The twinning law is a principle that governs the formation of twins during pregnancy.
   孪生法则是指导怀孕期间双胞胎形成的原则。
2. 2. This law has been applied to various fields, including genetics and medicine.
   这一法则已被应用于多个领域，包括遗传学和医学。
3. 3.The twinning law has significant implications for understanding the development of early human embryos.
   孪生法则对于理解早期人类胚胎的发展具有重要意义。