vt.

1. 分解
   decompose a chemical compound

   分解化学合成物

   A prism decomposes light.

   棱镜分解光。

2. 使腐烂

vi.

1. 被分解
2. 腐烂
   The meat began to decompose after some time in the sun.

   肉在太阳下放了一些时候后开始腐败。

v.

1. (of organic matter) become rotten; decay.
2. (of a chemical compound) break down into component elements.
3. Mathematics  express (a number or function) as a combination of simpler components.