众所周知，摩尔定律认为，每隔18个月，数字技术的费用就会降低，最终将会导致超级电脑价格下降，成为广大消费者可负担得起的电器。
We knew that Moore's law, which states that the cost of digital technology reduces by a factor of two every 18 months, would eventually make super computers cheap enough for consumer applications.
近日蔬菜价格暴跌使广大的中国菜农损失惨重。
The current vegetable price slump has taken its toll on Chinese farmers.
然而他们低估了现实，要制造安全可靠、价格合理，并且行驶距离和驾驶性能被广大司机接受的氢燃料电池汽车并没有想象中那么容易。
But they underestimated the obstacles in the way of producing a reliable, affordable car with the kind of range and drivability motorists now take for granted.
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