biologist

Similarly, every time a biologist discovers a new species, there is the opportunity to honour someone or something..类似地，每次一位生物学家发现一个新物种，就又有了一个纪念某人或某事的机会。

One biologist developed a formula for how much genetic material would have to be to saved in the act of altruism for it to be worthwhile..一位生物学家发展了一套公式，用来计算到底有多少遗传物质可以被保留下来的时候，利他的行为才是值得的。

An evolutionary biologist would say physical activity is the only voluntary means you have of varying or regulating your energy expenditure..一个进化生物学家会说体力活动是唯一的志愿就是你的不同或管理您的能源开支的。

marine biologist,海洋生物学家