今天我们要学的词是 pathogen. [ˈpæθədʒən]

pathogen 的意思是病原体，病因。（名词）

With new studies indicating that the world population can expect about five new animal-borne pathogens to infect humanity each year, there is an urgency to curb the wildlife trade.

新的研究表明，全球范围内每年可能有大约五种新的动物传播病原体感染人类，因此限制野生动物交易迫在眉睫。

Researchers who model the spread of pathogens say social distancing works because it reduces the effective strength of links between individuals，and that ultimately lowers the rate of transmission.

构筑病原体传播模型的研究人员说，保持社交距离是有效的，因为它削弱了人与之间联系的强度面最终降低了传播速度。

好的，我们今天学习的词是 pathogen, pathogen, pathogen.