aulacogen

例句：

1. 1. The body needs a lot of energy to maintain its functions.
   身体需要大量的能量来维持其功能。
2. 2. During exercise, the muscles store glycogen for later use.
   在运动时，肌肉储存糖原以备后用。
3. 3. Glycogen is an important source of energy for many organisms.
   糖原是许多生物体的重要能源来源。