nitrogen
/ˈnaɪtrədʒən/
n.
一句话记住
氮;氮气
释义与例句
n.
氮;氮气
a chemical element that is a colourless gas forming most of the Earth's atmosphere and is essential for living things
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Nitrogen makes up about seventy-eight per cent of the air we breathe.
氮气约占我们吸入空气的百分之七十八。
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Plants need nitrogen to produce proteins and grow properly.
植物需要氮来合成蛋白质并正常生长。
展开其余 1 条例句
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Liquid nitrogen is used to preserve some biological samples.
液氮被用于保存某些生物样本。
词族与关联词
易混词(形近或义近,注意区别)
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nitrate 硝酸盐;硝酸根nitrogen 是化学元素氮或氮气;nitrate 指含氮和氧的硝酸根离子或硝酸盐,二者不是同一种物质。This fertiliser contains compounds that release nitrate into the soil. 这种肥料含有会向土壤释放硝酸根的化合物。
常见搭配
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nitrogen levels 氮含量;氮水平The researchers measured nitrogen levels in the river water. 研究人员测量了河水中的氮含量。
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nitrogen fertiliser 氮肥Excessive use of nitrogen fertiliser can pollute nearby streams. 过量使用氮肥会污染附近的溪流。