nitrogen

nitrogen — 名詞

1. a gas that makes up the largest part of the air around Earth and is an important

1.名詞B1
釋義

氮；氮氣

一種無色無味的氣體，佔空氣的大部分

a gas that makes up the largest part of the air around Earth and is an important building block of all living plants and animals; it has no colour, taste, or smell.

例句

Farmers add nitrogen to the soil to help their crops grow better each season.

農夫在土壤中添加氮，幫助作物在每個季節長得更好。

collocation: add nitrogen to the soil

The air we breathe contains about 78 percent nitrogen and 21 percent oxygen.

我們呼吸的空氣中約有 78% 是氮，21% 是氧。

collocation: nitrogen + oxygen / 78 percent of air

同義詞
  • N

    chemical symbol used on the periodic table and in formulas; not used in ordinary speech or writing

文法句型

uncountable: nitrogen + verb (singular)

用法筆記

Nitrogen is an uncountable noun — you cannot say 'a nitrogen' or 'many nitrogens'. It is typically used in scientific, agricultural, or environmental contexts rather than in everyday conversation about air.

常見錯誤

❌Plants need oxygen from the soil to grow.
✅Plants need nitrogen from the soil to grow.
💡Nitrogen, not oxygen, is the element plants take from soil to build proteins.