The hydrogen economy promises to eliminate all of the problems that the fossil fuel economy creates.

However , sources and environment limit conventional hydrogen production by fossil fuel.

常规化石燃料制氢受到资源、环境多方面的制约.

Our civilisation based on fossil fuel.

我们的文明是以矿物燃料为基础的.

Researchers traditionally calculate the CO 2 emissions for a region or country data on fossil fuel consumption.

科学家以往都是根据区域或国家的化石燃料消耗量来计算二氧化碳排放量.

The U.S. meanwhile sits on largely untapped fossil fuel resources, including coal, natural gas and oil.

而美国则拥有很大程度上尚未开发的化石燃料资源, 包括煤, 天然气和石油.

Fossil fuel reserves on earth is finite.

地球上的矿物燃料储备是有限的.

Mary of there gases come from burning forests and fossil fuels.

许多这种气体来自于燃烧森林和化石燃料.

The burning of solid waste, fossil fuels, and wood products are major causes.

固体废物的, 燃烧化石燃料和木材产品的重要原因.

Prolonging our dependence on fossil fuels would guarantee homeland insecurity.

继续依赖矿物燃料将必然导致国内的不安全.

SC: Why haven't alternative energies already replaced fossil fuels?

本刊: 替代能源何以尚未取代化石燃料?

Today, nearly all hydrogen for cars comes from fossil fuels and solar.

现在几乎所有氢燃料汽车使用的氢都来源于化石燃料.

The fossil fuels, coal, oil and natural gas, are rapidly diminishing in supply as consumption increases.

矿物燃料, 煤 、 石油和天然气, 由于消费的增加而在快速的递减着.

Energy companies boasted of their diversification out of fossil fuels.

大众的担忧确实是企业标榜绿色的原因之一.

Farm machines that use fossil fuels, like plows and tractors, would not be needed either.

使用石油的农业机械, 例如犁和拖拉机也不再需要.

The fossil man can help us to understand the history of human evolution.

化石人有助于我们了解人类进化的历程.

Today, I watched a film about the fossil man.

今天我看了一部关于化石人的电影.

Fossil man is very important for research for human.

对于人类研究来讲,化石人非常重要.

The sediments are characteristically very fossiliferous.

沉积物的特征是含化石很多.

The most important parts, the flowers, rarely fossilise.

最重要的部分，即花朵，很少成为化石。

Fossilization of soft-bodied animals is less likely than fossilization of hard-bodied animals, but it does occur.

软体动物的化石比硬体动物化石少见得多, 但是也是可能发生的.

The study of fossilization in interlanguage is of great help to college English teaching.

对石化现象的研究为外语教学提供了有益的启示.