概念建模，把植物实体与状态变化建模在一起，尽量用一张图画出自然语言的一个完整描述，读者可以对比概念图和自然语言，看看怎么用好。

概念图对应的自然语言：     作者：Jane，俎涛

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There are five stages in the life cycle of a plant :

1. seed : A seed will grow into a new plant.

2. seeding : Seeds sprout.

3. growing plant:Plants constantly absorb light, water and other nutrients.

4. flower: Plants flowering

5. adult plant : Fruit is an adult plant. It contains many seeds.