Microbiological is the adjective for the science that studies very small living things such as bacteria — the science called microbiology. So a microbiological test is a test that looks for those tiny lives; microbiological safety is about keeping food, water, or a hospital free from the dangerous ones.

Microbiologicalmicrobiological is the adjective for the science是這門科學的形容詞 that studies very small living things such as bacteria這門科學研究像細菌這樣非常微小的生物—— the science called microbiology這門科學叫做microbiology。So所以 a microbiological test一個microbiological test（微生物檢驗） is a test that looks for those tiny lives就是在檢查有沒有那些微小生物的檢驗； microbiological safetymicrobiological safety（微生物安全） is about keeping food, water, or a hospital free from the dangerous ones講的是讓食物、水或醫院沒有那些危險的微生物。

The study itself is microbiology; this word, with -ical, describes things that belong to that study.

The study itself is microbiology這門學問本身叫microbiology； this word, with -ical這個字加了-ical， describes things that belong to that study用來描述屬於這門學問的東西。

You will see it in lab reports, food rules, and medical writing. It is a formal, scientific word, not a word for chat.

You will see it你會 in lab reports, food rules, and medical writing在實驗室報告、食品法規和醫學寫作裡看到它。It is這是個 a formal, scientific word正式的科學用詞， not a word for chat不是聊天用的詞。

Though actually, learners often grab the wrong member of the family: microbiology is the study, a microbiologist is the person, and microbiological is “about that study.”

Though actually不過其實， learners often grab the wrong member of the family學習者常常抓錯這個詞族裡的成員： microbiology is the studymicrobiology是這門學問， a microbiologist is the personmicrobiologist是這個人， and microbiological is "about that study"而microbiological是「跟這門學問有關的」。