first leaf development

例句：

1. 1. The first leaf development of the plant is crucial for its survival.
   植物的第一叶发展对其生存至关重要。
2. 2. During the early stages of development, the baby bird's first leaf development is vital for its survival.
   在婴儿鸟的早期发展阶段，其第一片叶子的发展对其生存至关重要。
3. 3. Researchers have been studying the first leaf development of this species to understand its ecology and evolution.
   研究人员一直在研究这种物种的第一片叶子发展，以了解其生态学和进化。