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Why Do Certain Fungi Glow Softly in the Dark Forest Floor?
为什么某些真菌会在幽暗的森林地表发出微光?
精读先不看文字,完整听一遍。
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Bioluminescent fungi produce light through a chemical reaction involving luciferin and oxygen.发光真菌通过荧光素与氧气的化学反应产生光。
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This glow appears only in warm, humid forests where decaying wood provides nutrients and moisture.这种微光只出现在温暖潮湿的森林中,腐烂的木材为其提供养分和水分。
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Scientists think the light attracts insects that help spread fungal spores to new logs.科学家认为,这种光能吸引昆虫,帮助真菌孢子传播到新的朽木上。
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The reaction is slow and steady—not flashing like fireflies—so it looks like a faint greenish mist.该反应缓慢而稳定——不像萤火虫那样闪烁——因此看起来像一层淡淡的绿雾。
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Only about 80 species of fungi worldwide glow, and most belong to the genus Mycena.全球约有80种真菌会发光,其中大多数属于小皮伞属(Mycena)。
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Their light intensity depends on temperature, pH, and the age of the decaying material.其发光强度取决于温度、酸碱度以及朽木的腐烂程度。
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Unlike bacteria or jellyfish, fungi do not regulate light with nerves or proteins called photoproteins.与细菌或水母不同,真菌不通过神经或光蛋白来调控发光。
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Researchers have isolated the genes responsible and inserted them into plants to test bio-lighting.研究人员已分离出相关基因,并将其转入植物中测试生物照明潜力。
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This natural glow fades quickly once the wood dries or cools, showing its tight link to ecology.一旦木材变干或降温,这种自然微光便会迅速消失,表明其与生态环境紧密关联。
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It reminds us that even silent, still organisms can harness chemistry to communicate across darkness.它提醒我们:即使沉默静止的生物,也能借助化学作用在黑暗中传递信息。
精读 · 大约 10 分钟
听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。
③ 学 · 重点表达
- Bioluminescent fungi produce light through a chemical reaction involving luciferin and oxygen. 发光真菌通过荧光素与氧气的化学反应产生光。
- Scientists think the light attracts insects that help spread fungal spores to new logs. 科学家认为,这种光能吸引昆虫,帮助真菌孢子传播到新的朽木上。
- Their light intensity depends on temperature, pH, and the age of the decaying material. 其发光强度取决于温度、酸碱度以及朽木的腐烂程度。
④ 懂 · 选一选
⑤ 今天会说这一句
Bioluminescent fungi produce light through a chemical reaction involving luciferin and oxygen.
⑥ 跟读并录音
Bioluminescent fungi produce light through a chemical reaction involving luciferin and oxygen.
第一版:录下来、回听、再听标准音。系统打分以后再加。
⑦ 说 · 自己来一句
用今天的表达,自己说一句。
例子:Bioluminescent fungi produce light through a chemical reaction involving luciferin and oxygen.
已记下。连续天数以后会显示在课表里。
陈老师指导
课程开发中,敬请期待。成人和孩子都可以先自学听读、精读。
这边的讲解音轨还在做。想先跟着老师走完固定 30 课,可以去陈老师带读社(和自学通行不是同一份会员)。
课程开发中,敬请期待。