moulting hormone

例句：

1. 1.The moulting hormone levels in theblood are crucial for the bird'ssurvival.
   鸟类血液中的蜕皮激素水平对于其生存至关重要。
2. 2. The moulting hormoneis responsible for the bird's molting process.
   蜕皮激素负责鸟类的脱羽过程。
3. 3. The moulting hormone playsa vital role in the bird'simmune system.
   蜕皮激素在鸟类免疫系统中起着重要作用。