来自organ,运行，器官，组织机构，-ism,主义，思想，机制。即有组织运行的机制，后引申词义生物，有机体。

1. The human organism learns partly by nature, partly by nurture.

人的学习能力部分是天生的，部分是后天培养的。

来自柯林斯例句

2. The army is an extremely complex organism.

军队是一个极其复杂的组织.

来自《简明英汉词典》

3. The amoeba is a very simple organism.

变形虫是很简单的生物体.

来自《简明英汉词典》

4. It was an infectious organism that he studied.

他研究的是一种可传染病菌的微生物.

来自《简明英汉词典》

5. Genetic engineers transpose or exchange bits of hereditary material from one organism to the next.

遗传工程师将某一生物的小段遗传物质调换到另一生物，或与其互换。

来自柯林斯例句