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germ theory 【生物學】生源說,【醫學】病菌說,微生物說。

germ weapon

The introduction states that the audience is the high - school student , but this reference also provides an excellent background for college students and adult library patrons researching topics such as germ theory , boolean algebra , or the invention of the typewriter 引進國觀眾是高校學生,但這一提法,也提供了一個很好的背景,為大學生和成人圖書館食客研究的課題,如胚芽理論,布爾代數,或發明的打字機。

For example : the invention of the microscope led to the discovery of germs ; eventually , the germ theory of disease made possible the curing of many ills for which no effective treatment had ever before been know 例如:顯微鏡的發明致使細菌得以發現;最后,病菌理論使許多之前無法得到有效治療的病得以治愈成為可能。