科学素养与生活应用·英语30篇（4）

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藻类生物燃料：来自微小生物的绿色能源

Microalgae grow rapidly in ponds or photobioreactors, converting sunlight, CO₂, and nutrients into oils usable as biodiesel feedstock.
They produce up to 30 times more oil per hectare than soybeans—without competing for arable land or freshwater resources.
Harvesting involves flocculation, centrifugation, or membrane filtration to separate dense algal paste from growth medium efficiently.
Oil extraction uses mechanical pressing or solvent methods, followed by transesterification to convert triglycerides into fatty acid methyl esters (FAME).
Residual biomass becomes nutrient-rich animal feed or soil conditioner—closing resource loops instead of creating waste.
Carbon capture is built-in: algae absorb CO₂ from power plant flue gas, turning emissions into raw material for fuel production.
Lifecycle analyses show net greenhouse gas reductions of 50–70% compared to fossil diesel when renewable energy powers cultivation.
Scaling requires balancing energy inputs for pumping, lighting, and processing against energy outputs from refined fuel.
Genetic engineering helps boost lipid yields and tolerance to variable light or salinity—accelerating strain optimization timelines.
Though still emerging, algae biofuels represent photosynthesis harnessed not just for food—but for clean, circular energy.

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

Residual biomass becomes nutrient-rich animal feed or soil conditioner—closing resource loops instead of creating waste. 剩余生物质可制成营养丰富的动物饲料或土壤调理剂，实现资源循环而非产生废弃物。
Harvesting involves flocculation, centrifugation, or membrane filtration to separate dense algal paste from growth medium efficiently. 收获过程采用絮凝、离心或膜过滤等方法，高效地将浓稠的藻浆与培养液分离。
Scaling requires balancing energy inputs for pumping, lighting, and processing against energy outputs from refined fuel. 规模化需权衡泵送、照明和加工等能耗与精炼燃料产出的能量。

这篇中文题目最接近哪一句？藻类生物燃料：来自微小生物的绿色能源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？微藻在池塘或光生物反应器中快速生长，将阳光、二氧化碳和养分转化为可用作生物柴油原料的油脂。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） Algae-Based Biofuels: Green Energy from Tiny Organisms How to cook noodles A maths worksheet

Residual biomass becomes nutrient-rich animal feed or soil conditioner—closing resource loops instead of creating waste.

Residual biomass becomes nutrient-rich animal feed or soil conditioner—closing resource loops instead of creating waste.

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：Residual biomass becomes nutrient-rich animal feed or soil conditioner—closing resource loops instead of creating waste.