nitrogen

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数据源: ai_enrichment
氮是一种无色无味的化学元素,符号为N,是空气的主要成分之一,对生命和工业至关重要。

用法要点

句型搭配

氮通常作为不可数名词使用,表示物质或元素,常用于描述其性质、含量或作用,如'nitrogen is essential for...'或'contains nitrogen'。

• Nitrogen is a key component of proteins.
• The atmosphere contains about 78% nitrogen.
• Plants absorb nitrogen from the soil.

介词用法

氮常与介词'of'连用表示所属关系,如'nitrogen of the air';与'in'表示存在位置,如'nitrogen in fertilizers';与'for'表示目的,如'nitrogen for growth'。

• The nitrogen of the atmosphere is inert.
• There is nitrogen in this compound.
• Nitrogen is needed for plant development.

语域说明

氮在学术、科技和工业语境中高频使用,如化学、生物学和农业;在日常对话中较少提及,除非讨论环境或科学话题。

• In academic papers, nitrogen cycles are studied.
• In industry, liquid nitrogen is used for cooling.
• Casually, people might mention nitrogen in gardening tips.

基础例句

Plants need nitrogen to grow healthy and strong.

植物需要氮才能健康茁壮地生长。

The air we breathe is mostly made up of nitrogen.

我们呼吸的空气主要由氮组成。

Farmers often add nitrogen to the soil to help crops.

农民经常在土壤中添加氮来帮助作物生长。

I learned in school that nitrogen is a colorless gas.

我在学校学到氮是一种无色气体。

高级例句

The nitrogen cycle is crucial for ecosystem sustainability, involving processes like fixation and denitrification.

氮循环对生态系统可持续性至关重要,涉及固氮和反硝化等过程。

Industrial applications of liquid nitrogen include cryopreservation and metal treatment.

液氮的工业应用包括低温保存和金属处理。

Excessive nitrogen runoff from agriculture can lead to eutrophication in water bodies.

农业中过量的氮径流可能导致水体富营养化。

In pharmaceutical research, nitrogen is used as an inert atmosphere to prevent oxidation.

在药物研究中,氮被用作惰性气氛以防止氧化。

高频搭配

verb

absorb nitrogenfix nitrogenrelease nitrogenconvert nitrogenuse nitrogen

adjective

liquid nitrogenatmospheric nitrogenpure nitrogennitrogen-richnitrogen-fixing

noun

nitrogen cyclenitrogen gasnitrogen oxidenitrogen fertilizernitrogen content

adverb

mainly nitrogenprimarily nitrogenabundantly nitrogen

preposition

nitrogen in the airnitrogen of the compoundnitrogen for plants

phrase

nitrogen fixationnitrogen balancenitrogen pollutionnitrogen deficiency

常见错误

❌ 错误:The nitrogen are important for life.
✓ 正确:Nitrogen is important for life.

错误:将氮作为可数名词使用并搭配复数动词'are'。正确:氮是不可数名词,应搭配单数动词'is',表示其作为物质元素的整体概念。

❌ 错误:We need to add more nitrogens in the soil.
✓ 正确:We need to add more nitrogen to the soil.

错误:使用复数形式'nitrogens'。正确:氮是不可数名词,没有复数形式;同时介词应用'to'表示添加方向,而非'in'。

近义词辨析

air

空气是氮、氧等气体的混合物,而氮特指其中一种化学元素;空气更常用于日常语境,氮更偏重科学描述。

The air contains nitrogen, but nitrogen itself is a pure element.

gas

气体是物质的一种状态,泛指如氮、氧等;氮是具体的气体元素,常强调其化学性质或作用。

Nitrogen is a gas, but not all gases are nitrogen (e.g., oxygen is also a gas).