今天我們要學的詞是 pathogen.

Pathogen is spelled P-A-T-H-O-G-E-N, pathogen.

Pathogen 的意思是病原體，病因。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，全球范圍內每年可能有大.約五種新的動物傳播病原體感染人類，因此限制野生動物交易迫在眉睫。

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. 構筑病原體傳播模型的研究人員說，保持社交距離是有效的，因為它削弱了人與之間聯系的強度面最終降低了傳播速度。

好的，我們今天學習的詞是 pathogen, pathogen, pathogen.