They argue that small exercise bikes could be a cheap solution.
他们认为小小的健身自行车或许是一种成本低廉的解决之道。
Most e-bikes rely on lead-acid batteries, cheap century-old technology unsuitable for the growing demands of daily commuting.
大多数电动自行车依靠酸性电池，这种非常廉价的上世纪的技术已经不能满足于每天消耗量的上升。
Most e-bikes rely on lead-acid batteries, cheap century-old technology unsuitable for the growing demands of daily commuting.
大多数电动自行车依靠酸性电池，这种非常廉价的上世纪的技术已经不能满足于每天消耗量的上升。
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