科学素养与生活应用·英语30篇（1）

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可生物降解包装如何分解，以及‘可降解’的真实含义

‘Biodegradable’ means microbes can digest material into water, CO₂, and biomass—under right conditions.
Industrial composting facilities provide high heat, moisture, and microbial diversity needed for full breakdown.
Many ‘bioplastics’ labeled biodegradable won’t decompose in backyard piles or oceans.
Standards like ASTM D6400 define required disintegration rates and non-toxic residue limits.
Food contamination often prevents recycling, so compostable packaging offers a cleaner alternative—if processed correctly.
Material scientists engineer polymers with ester bonds that enzymes readily cleave apart.
Still, improper disposal risks sending compostables to landfills where they emit methane instead of breaking down.
Clarity in labeling and infrastructure investment are both essential for real-world sustainability.

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

Many ‘bioplastics’ labeled biodegradable won’t decompose in backyard piles or oceans. 许多标有‘可生物降解’的‘生物塑料’在家庭堆肥堆或海洋中无法分解。
Standards like ASTM D6400 define required disintegration rates and non-toxic residue limits. ASTM D6400等标准规定了必要的崩解速率及无毒残留物限值。
Material scientists engineer polymers with ester bonds that enzymes readily cleave apart. 材料科学家设计含酯键的聚合物，便于酶快速切断。

这篇中文题目最接近哪一句？可生物降解包装如何分解，以及‘可降解’的真实含义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？ ‘可生物降解’指微生物在适宜条件下能将材料分解为水、二氧化碳和生物质。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 Biodegradable Packaging Breaks Down—And What It Really Means How to cook noodles A maths worksheet

Many ‘bioplastics’ labeled biodegradable won’t decompose in backyard piles or oceans.

Many ‘bioplastics’ labeled biodegradable won’t decompose in backyard piles or oceans.

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：Many ‘bioplastics’ labeled biodegradable won’t decompose in backyard piles or oceans.