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。
The paper analyses the problem existing in e-office document commuting, present the idea using XML express e-office document.
论文首先分析了电子政务中电子公文文档交换存在的问题，提出了利用XML表示电子公文的思想；
Some suggest that long hours of commuting especially in a confined space (e. g. a packed train), traffic jams and delays can be causes of emotional stress.
有意见认为在一个局限的空间(如挤满的火车)作长时间的通勤，加上交通堵塞及延误，容易导致情绪紧张。
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