科学素养与生活应用·英语30篇（4）

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闪电如何触发土壤固氮：大气化学与微生物协同作用

Lightning heats air to over 30,000°C, breaking nitrogen and oxygen molecules apart instantly.
Free nitrogen and oxygen atoms recombine into nitrogen oxides, which dissolve in rainwater.
This creates naturally occurring nitrate-rich rain that fertilizes soils without human input.
Plants absorb dissolved nitrates through roots, using them to build essential proteins and DNA.
Soil bacteria then convert excess nitrates into inert nitrogen gas via denitrification.
Each lightning strike produces about 10 kilograms of usable nitrogen compounds per square kilometer.
Scientists measure nitrate concentration spikes in rainwater collected immediately after thunderstorms.
Farmers in remote regions rely partly on this process to maintain crop fertility year after year.
Climate models now include lightning frequency data to estimate natural fertilizer inputs globally.
This atmospheric pathway complements biological nitrogen fixation by legume-root microbes.

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

This atmospheric pathway complements biological nitrogen fixation by legume-root microbes. 这一大气路径与豆科植物根部微生物的生物固氮作用相辅相成。
Scientists measure nitrate concentration spikes in rainwater collected immediately after thunderstorms. 科学家在雷暴刚结束时采集雨水，测量其中硝酸盐浓度的骤升。
This creates naturally occurring nitrate-rich rain that fertilizes soils without human input. 由此形成天然富含硝酸盐的雨水，无需人为干预即可为土壤施肥。

这篇中文题目最接近哪一句？闪电如何触发土壤固氮：大气化学与微生物协同作用一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？闪电将空气加热至超过30,000°C，瞬间击碎氮气和氧气分子。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） How Lightning Triggers Nitrogen Fixation in Soil How to cook noodles A maths worksheet

This atmospheric pathway complements biological nitrogen fixation by legume-root microbes.

This atmospheric pathway complements biological nitrogen fixation by legume-root microbes.

第一版：录下来、回听、再听标准音。系统打分以后再加。

用今天的表达，自己说一句。

例子：This atmospheric pathway complements biological nitrogen fixation by legume-root microbes.