vehicles powered by hydrogen fuel cells are, in theory, pollution-free but their popularity has been compromised by the difficulty of generating hydrogen cheaply and plentifully.
从理论上讲,氢燃料电池驱动的汽车是无污染的,但由于氢难以廉价、大量地生产,这种汽车在普及方面打了折扣。
methane from landfills accounts for only about 4% of greenhouse gases, but it can be dealt with relatively cheaply and easily.
从垃圾堆中释放出的甲烷仅占据温室气体的4%,但是它能够被以相对廉价并容易的处理掉。
these firms could deal more cheaply and in greater size.
这些公司的进入使得交易更便宜,规模更大。
the problem, he says, may be figuring out how to mass-produce images more cheaply than other techniques can.
存在的问题,他说,可能是摸索出如何比其他方法更廉价地生成批量图象。
they can be popped in a recycling bin when you arrive and bought cheaply or had for free when you get to the other end.
不管你是到达了目的地,还是在到达下一个地点时便宜买来或免费得到的,这些盒子都能再次得到回收利用。
as orwell said, 「there is always some cheaply pleasant thing to tempt you.
正如奥威尔所说:“总有廉价令人愉快的东西吸引你。」
utilities are supposed to let you build one-off applications cheaply and easily from the materials at hand.
实用程序应该允许您根据手边的材料廉价而容易地构建一次性的应用程序。
that undermines the idea that chinalco, an aluminium maker with no need of iron ore, would seek to persuade rio to sell cheaply to china inc.
这削弱了这样一种说法,即中铝作为一家不需要铁矿石的铝制造商,会企图说服力拓廉价出售产品给中国公司。
selecting only roads coloured yellow or white on the michelin map – ideally those tinged with green, for scenic value – we would stay cheaply and spend our money on supper.
只选择在米其林地图上用黄色或白色标出的道路,当然绿色的更理想,这是有景观的道路。我们住廉价旅馆,把钱花在晚餐上。
and would you be surprised to know the information may be sold cheaply to advertisers and marketers?
如果有人告诉你这些信息被廉价出售给广告商和销售商,你是否会感到吃惊呢?
in doing so, it offered the average american his first chance to invest cheaply and directly in the stockmarket.
他们的行为,第一次给予普通美国人廉价和直接投资于股票市场的机会。
as long as the tax authorities are happy that the promised sum is being spent on the stated projects, a university can borrow cheaply and, in effect, earn a spread.
只要税务机构对这些花费在国有工程的许诺金额满意,大学就能相对便宜地借到资金,有效地赢得其中的差额。