chemical
chemical — 名詞
1. a type of matter, either natural or human-made, that is created through or emplo
化學物
化學反應中產生或使用的物質
a type of matter, either natural or human-made, that is created through or employed in reactions where atoms or molecules change how they are arranged or connected
The factory was fined for dumping toxic chemicals into the nearby river.
那家工廠因為將有毒化學物倒入附近的河流而被罰款。
countable plural: toxic chemicals
Aiko wore rubber gloves when handling the cleaning chemical under the sink.
Aiko 戴著橡膠手套處理水槽下方的清潔化學物。
countable singular: cleaning chemical
Scientists at the lab discovered a new chemical that kills bacteria on surfaces.
實驗室的科學家發現了一種能殺死表面細菌的新化學物。
This swimming pool contains a chemical that keeps the water clear and safe.
這個游泳池含有一種能保持水質清澈安全的化學物。
Some food companies add chemical preservatives to make their products last longer.
有些食品公司添加化學防腐劑，讓產品保存更久。
文法句型
chemical + noun (compound noun)
often used in plural: chemicals
用法筆記
Often used in the plural form 'chemicals' when referring to multiple substances in a general or industrial context.
常見錯誤
chemical — 形容詞
1. relating to the scientific study of what substances are made of, how they change
化學的
與化學相關的
relating to the scientific study of what substances are made of, how they change, and how they join or break apart
Ravi enjoyed his chemical experiments more than any other class at school.
Ravi 最喜歡學校的化學實驗課，勝過其他任何課程。
chemical + noun: chemical experiments
The nurse studied the chemical structure of the medicine before giving it.
護理師在給藥前先研究了這種藥物的化學結構。
A chemical reaction between vinegar and baking soda created bubbles in the jar.
醋和小蘇打之間的化學反應在罐子裡產生了氣泡。
Dr. Okafor published a paper on the chemical properties of the new material.
Okafor 博士發表了一篇關於這種新材料化學特性的論文。
The Watanabe family donated old chemical equipment to the university lab.
Watanabe 家把舊的化學設備捐給了大學實驗室。
- chemistry
used as a noun modifier: 'chemistry lab' vs 'chemical lab' — mostly interchangeable in this sense
文法句型
chemical + noun (relating to chemistry)
用法筆記
This sense describes things that belong to the field of chemistry itself — formulas, labs, textbooks, processes. Do not confuse with the 'MAN-MADE' sense, which describes products that contain artificial substances.
常見錯誤
2. containing or made from artificial substances created by humans through industri
化學製
使用化學物質製成的；含化學成分的
containing or made from artificial substances created by humans through industrial or laboratory processes, rather than occurring naturally
Many farmers now use chemical fertilizers to help their crops grow faster.
許多農民現在使用化學肥料，讓作物長得更快。
collocation: chemical fertilizers
Leila prefers natural cleaning products over chemical sprays for her kitchen.
Leila 偏好天然清潔產品，不愛用廚房裡的化學噴霧劑。
contrast with: natural products
The factory in Tianjin produces chemical additives used in plastic bottles.
天津的這家工廠生產用於塑膠瓶的化學添加劑。
Some people worry about chemical preservatives in packaged foods and drinks.
有些人擔心包裝食品和飲料中的化學防腐劑。
The gardener avoided chemical pesticides and used natural methods to protect the soil.
園丁避免使用化學農藥，改用自然方法來保護土壤。
- synthetic
more formal; specifically means human-made rather than natural
- artificial
broader; can mean any human-made imitation of something natural
- processed
refers to ingredients that have been changed through industrial methods
文法句型
chemical + noun (containing or made with artificial substances)
用法筆記
Common in discussions about food, farming, and household products. Often contrasted with 'natural' or 'organic'. This sense is the one most frequently used in everyday shopping and health contexts.