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Hydrogen Fuel Cell Vehicles and the Infrastructure Bottleneck
氢燃料电池汽车与加氢基础设施瓶颈
精读先不看文字，完整听一遍。
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Hydrogen fuel cell cars convert hydrogen gas into electricity, emitting only water vapor.氢燃料电池汽车将氢气转化为电能，仅排放水蒸气。
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Each refueling takes about three to five minutes—similar to gasoline vehicles—but requires high-pressure stations.每次加氢耗时约3至5分钟，与燃油车相当，但需依赖高压加氢站。
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Fewer than 1,000 public hydrogen stations exist worldwide, mostly clustered in California, Japan, and Germany.全球公共氢燃料站不足1000座，主要集中在加州、日本和德国。
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Building one costs roughly $2 million, far more than installing a fast EV charger.建设一座加氢站成本约200万美元，远高于安装一台快充充电桩。
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Hydrogen production itself is often fossil-fueled, undermining its 'green' promise unless made via electrolysis using renewable power.氢气生产本身常依赖化石燃料，除非采用可再生能源电解制氢，否则难以兑现其‘绿色’承诺。
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Storage and transport are difficult because hydrogen molecules leak easily and need cryogenic or high-pressure tanks.氢气储存和运输困难，因其分子易泄漏，需低温或高压储罐。
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Car makers continue developing fuel cell models, but adoption hinges on coordinated government and industry investment.车企持续研发燃料电池车型，但普及取决于政府与产业的协同投资。
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Some cities pilot hydrogen buses and delivery trucks where centralized refueling simplifies logistics.一些城市试点氢燃料公交车和配送卡车，集中加氢可简化物流。
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Fuel cells excel in heavy-duty transport, offering longer range and faster refueling than current batteries.燃料电池在重载运输领域优势明显，续航更长、加氢更快，优于当前电池技术。
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Until infrastructure scales, hydrogen remains a niche alternative to battery-electric mobility.在基础设施规模化之前，氢能源仍是电动出行的小众替代方案。
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
- Until infrastructure scales, hydrogen remains a niche alternative to battery-electric mobility. 在基础设施规模化之前，氢能源仍是电动出行的小众替代方案。
- Hydrogen fuel cell cars convert hydrogen gas into electricity, emitting only water vapor. 氢燃料电池汽车将氢气转化为电能，仅排放水蒸气。
- Some cities pilot hydrogen buses and delivery trucks where centralized refueling simplifies logistics. 一些城市试点氢燃料公交车和配送卡车，集中加氢可简化物流。
④ 懂 · 选一选
⑤ 今天会说这一句
Until infrastructure scales, hydrogen remains a niche alternative to battery-electric mobility.
⑥ 跟读并录音
Until infrastructure scales, hydrogen remains a niche alternative to battery-electric mobility.
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：Until infrastructure scales, hydrogen remains a niche alternative to battery-electric mobility.
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。
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课程开发中，敬请期待。