Word · Frequency #2548
chemical
化学品;化学物质
核心释义
a substance that is used in or produced by a chemical process, such as an element or compound
- 1.
Any specific chemical element or chemical compound or alloy.
- 2.
由原子或分子变化反应产生或使用的物质
material produced by or used in a reaction involving changes in atoms or molecules
由原子或分子变化反应产生或使用的物质;化学药品
用法In use
The lab stores many chemicals in glass bottles.
用法提示:此句中“chemicals”为名词复数形式,指化学物质。
This chemical is dangerous if you touch it.
用法提示:此句中“chemical”是单数名词,指一种化学物质。
They use chemicals to make plastic.
用法提示:此句中“chemicals”为名词复数,表示多种化学物质。
a chemical used in [process]
used in 是过去分词短语作后置定语,相当于 that is used in。
A chemical used in this test must be colorless.
用于这项试验的化学品必须是无色的。
a chemical with [property]
with 短语修饰 chemical,表示该化学品具有的特征。
A chemical with a strong smell should be handled carefully.
相关词与表达Connections
搭配Collocations
- toxic chemicals
- 有毒化学品
- The factory released toxic chemicals into the river.那家工厂向河里排放了有毒化学品。
- industrial chemicals
- 工业化学品
- Workers at the plant handle many industrial chemicals every day.工厂的工人每天处理许多工业化学品。
- household chemicals
- 家用化学品
- Keep household chemicals out of the reach of children.把家用化学品放在儿童够不到的地方。
- agricultural chemicals
- 农用化学品
- Farmers use agricultural chemicals to protect their crops from pests.农民使用农用化学品来保护庄稼免受虫害。
- hazardous chemicals
学习提示Learner notes
记忆技巧Memory Tip
chemical与chemistry同以chem开头,化学课实验瓶里装的都是chemical(化学品)。
语境与语域Context & Register
语域:neutral 常见场景:实验室、工业生产、日常环保话题 该词在科技、工业和日常语境中均为中性,正式和非正式场合都适用;通常指参与化学反应的物质或化工产品。
发音与拼写Pronunciation & Spelling
这些词都与 chemical 一样以 -ical 结尾;本列表中 -ical 读作 /ɪkəl/。但它们重读音节中的元音和其后的辅音与 chemical 不同,因此并不与 chemical 真正押韵。political 的重音在第二音节,读音尤其容易按拼写想错。
高价值词汇High-value vocabulary
该词属于 Oxford 核心词汇,值得优先掌握常见搭配和句型。
用法优先级Usage priority
Collins 词频等级为 4,建议结合例句记忆,而不是只背中文释义。
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Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.