在四年内他们开发出了第一辆能够上路行驶的普锐斯混合动力车。

Within four years they had their first Prius on the road.

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即便如此，他们还是花了两年的时间才成功地造出了一辆工作车。

Even so, it was two years before they had succeeded in building a working car.

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现在，为了减轻他们的劳动量，发明出了太阳能发电人力车，或者简称太阳能人力车。

Now, to help ease their labor, there is the Solar-Electric Rickshaw, or Soleckshaw.

youdao

现在，为了减轻他们的劳动量，发明出了太阳能发电人力车，或者简称太阳能人力车。

Now, to help ease their labor, there is the Solar-Electric Rickshaw, or Soleckshaw.

youdao