A bacteriologist is a scientist whose work is the scientific study of bacteria — those tiny living things that can help us or make us ill. They grow bacteria in labs, look at them under a microscope, and try to learn how they live, how they spread, and which medicines can stop the harmful ones.

A bacteriologist is a scientistBacteriologist是一種科學家 whose work is the scientific study of bacteria工作是對細菌（bacteria）做科學研究 those tiny living things that can help us or make us ill細菌是那些可能幫助我們、也可能讓我們生病的微小生物 They grow bacteria in labs他們在實驗室培養細菌 look at them under a microscope用顯微鏡觀察 and try to learn how they live, how they spread, and which medicines can stop the harmful ones並試著弄清楚細菌怎麼生活、怎麼傳播，還有哪些藥能阻止那些有害的細菌

Some work in hospitals, some in universities, some in food or water safety. The word is formal and belongs to science; it is the name of a job, not the name of the subject.

Some work in hospitals, some in universities, some in food or water safety有些在醫院工作，有些在大學，有些在食品或水質安全的領域 The word is formal and belongs to science這個字很正式，屬於科學用語 it is the name of a job, not the name of the subject它是職業的名稱，不是這門學科本身的名稱

Though actually, in everyday English people sometimes just say “a lab scientist,” but bacteriologist is the exact title for this work.

Though actually不過其實 in everyday English people sometimes just say "a lab scientist,"在日常英文裡，大家有時候就直接說『a lab scientist（實驗室科學家）』 but bacteriologist is the exact title for this work但bacteriologist才是這份工作精確的正式頭銜