What prevented Chris Cocalis from developing e-bikes sooner?
是什么阻碍了克里斯·科卡利斯更迅速地开发电动自行车？
Although e-bikes first appeared in the 90s, cheaper options and longer-lasting batteries are breathing new life into the concept.
虽然电动自行车最早出现在上世纪90年代，但更便宜的选择和更持久的电池正在给这一概念注入新的活力。
But after a while, I realized that e-bikes are actually much safer than motorcycles, and better for the environment.
但过了一段时间以后，我意识到电动自行车要比摩托车安全得多，对环境也有好处。
The new e-bikes can easily double that range.
使用新型的电动自行车可以轻松将这一里程翻番。
Police stations are often fronted by a row of blue and white patrol e-bikes.
警察局也经常派出骑着蓝色和白色电动自行车的巡逻警察。
Experts say that the next regions to likely embrace e-bikes are Southeast Asia and India.
专家说，电动自行车可能大行其道的下一个地区将是东南亚和印度。
The biggest manufacturer, Jiangsu Xinri Electric Vehicle Co, produced 1.8m "e-bikes" last year.
去年，大陆规模最大的自行车制造商（江苏新日电动车有限公司）生产了180万辆“电动自行车”。
Commercial production of e-bikes only started in 1998, when 58,000 were produced, and has spiralled higher ever since.
商用电动车的生产始于1998年，当时的产量仅为58，000辆，但从那以后，电动车产量快速上升。
In Zhejiang province, Hangzhou banned out-of-town e-bikes; in Wenzhou, police confiscated 5, 000 electric bikes in half a month for being too fast and large.
在浙江省，杭州市禁止外地牌照的电动自行车上路；温州市警方在半个月时间内没收了5，000辆电动自行车，这些车被没收的原因是速度太快或体积太大。
More cities decided they'd had enough. The northeast industrial town of Shenyang banned e-bikes in 2009 after their Numbers spiked in the wake of a motorcycle ban.
有更多城市认为它们已经无法容忍电动自行车。东北工业城市沈阳在2009年禁止了电动自行车，此前该市的电动自行车数量在摩托车被禁后出现了大幅增长。
The authorities are also trying to make e-bikes themselves greener: manufacturers are being compelled to invest in lighter materials and to replace lead-acid batteries with lithium ones.
有关当局也正在设法使电动自行车变得更加环保：迫使制造商们投入资金研发轻型材料，用锂电瓶替代铅酸电瓶。
E-bikes weren't always so popular on the mainland.
电动自行车并不是一直在大陆畅销的。
E-bikes weren't always so popular on the mainland.
电动自行车并不是一直在大陆畅销的。
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