而能量和原料就来自于分解更大，更复杂的细胞，这个过程就叫分解代谢。
This energy and building material comes from the breaking down of larger, more complex material, a process called catabolism.
合成代谢是生成和储存能量，而分解代谢则是能量的释放。
Anabolism is when energy is created and stored, and catabolism is when energy is released.
与合成反应一样，分解代谢需要的能量和原料来自于身体的分泌物。
As well as producing energy and building material, catabolism also breaks down material for excretion from the body.
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