在植物把它们播撒四方之后，它们可以长期存留在湖底的淤泥里或者或化石中。
After plants spread theirs far and wide it can be preserved in lakebeds or fossilized in soil.
只有积极的研究发展项目才能够摆脱我们对化石燃料依赖，或找到解决这一问题的方法。
Only an aggressive research and development program might find ways of breaking our dependence on fossil fuels or dealing with it.
在这种情况下，骨骼或外壳的原始成分会保留下来，但化石会变得更坚硬、更耐用。
In such cases, the original composition of the bone or shell remains, but the fossil is made harder and more durable.
他以及其他科学家表示，现在主要有两种替代化石燃料的选择，即用可再生能源产生能量或采用核能。
He and other scientists say there are basically two options to replacing fossil fuels, generating energy with renewables, or embracing nuclear power.
我想我们可以先问问观众哪种汽车引擎被最早设计为使用化石或生物燃料。
I thought we could start by asking our audience what car engines were first designed to run on-fossil fuels or biofuels.
由于成年恐龙化石有时在巢穴附近或巢穴顶部被发现，我们一直在观察恐龙的育儿行为。
Since adult dinosaur fossils have sometimes been discovered near or on top of nests, we've been looking at the dinosaur parenting behavior.
他们还研究了在巢穴里或巢穴附近发现的那三种恐龙的骨骼化石，以确定它们的性别。
They also examined the fossilized bones of those three types of dinosaurs that were found on or near nests to determine their sex.
如你所知，沉积物是通过风、水流或冰川运动等自然过程输送的物质，如沙子、砾石、化石碎片等。
Sediment as you know, is material like sand, gravel, fossil fragments that is transported by natural processes like wind, water flow or the movement of glaciers.
我们所说的化石，指的是史前动物的遗迹，如已矿化的骨头，或留在石头上的骨头或器官的印痕。
By fossils, we mean traces of prehistoric animals such as bones, which become mineralized, or impressions of bones or organs that are left in stone.
这块古代排泄物或粪化石，同烧焦的多刺梨种子散落在一起，点缀着来自鱼、鸟、啮齿目动物的小块骨头。
The ancient fecal material, or coprolite, was littered with seared prickly pear seeds and flecked with small bones from fish, birds, and rodents.
未来可能会发现更多包括脚印、骨头或恐龙蛋在内的恐龙化石。
More dinosaur fossils, including footprints, bones or eggs, could be discovered in the future.
蓝旗用来显示发掘地的周长，而黄旗用来标明发掘出化石或石制工具的地点。
Blue flags define the excavation perimeter, while yellow ones mark the location of fossils or stone tools.
世界各地的标本在被运到这里时，还被密封在岩石或发现源地的污泥之中，只有经过化石准备工作以后，那些头颅、股骨和牙齿才能显露出来。
Specimens from all over the world come in, still encased in the rock or mud where they were found, and it's the job of the fossil preparators to get the skulls, femurs and teeth out.
在这项研究里，科学家们把世界上宠物的主人进行划分，并且对超过500个现存的或已成为化石的物种的大脑面积进行了研究。
The findings, which are bound to divide pet owners around the world, come from a study into the brain size of more than 500 species of living and fossilised mammals.
就其本身而言，它们不足以减少该国对化石燃料的依赖或应对气候变化的危险。
By themselves they are not enough to reduce the country's dependence on fossil fuels or combat the dangers of climate change.
通过减少化石燃料的燃烧或更多的依赖令人们有点畏惧的核能也可以达成这一目的。
These can also be met by burning less fossil fuel or relying more on-dread word-nuclear power.
他的发现多次被其他人证实，主要用于是论证必须对化石燃料征税或进行监管。
His findings, confirmed many times by others, are central to the argument that fossil fuels must be taxed or regulated.
该研究报告的作者雅各布森指出，研究中还将燃烧化石燃料和燃烧像木头或粪便之类生物燃料所产生黑碳的影响进行了甄别。
Jacobson, the study's author, noted that the study also separated the effects of black carbon produced by burning fossil fuels and that produced by biofuels like wood or dung.
这个“二人组”就成了已知最古老的化石证据，来支持无气门亚目一类螨虫的搭便车现象，或称寄载现象。
That makes the duo the oldest known fossil evidence of hitch-hiking behavior, or phoresy, in a large group of mites called the Astigmata.
这些化石都显现出附有羽毛或或羽毛类结构。
他说：“化石记录一再证实现代胎盘类哺乳动物的起源是在白垩纪-早第三纪分界点的时候或那之后。
“The fossil record continues to show that the origin of modern placental mammals postdates or is at the Cretaceous-Paleogene boundary, ” he said.
减排燃烧化石燃料，草木，畜粪及其它能源所产生的黑碳，或烟尘可能会减缓全球变暖。
Cutting the black carbon, or soot, produced by burning fossil fuels, vegetation, dung and other sources could reduce global warming.
虽然燃料电池和电动汽车本身不会释放二氧化碳，但使用化石燃料生产氢气或电能依旧会产生二氧化碳。
While fuel cell or electric vehicles emit no carbon dioxide themselves, CO2 is produced when hydrogen or electricity is produced from fossil fuels.
碳税或排放许可拍卖，不仅有利于解决气候变化问题，也会挤压化石燃料出口商的暴利空间。
Carbon taxes or auctioned emissions permits not only address climate change but recapture some of the windfall profits of fossil fuel exporters.
周忠和表示，最重要的化石标本并不是由科学家们发掘出来的，它们也不会放在化石铺子中，而是被藏在化石贩子或农民的家中。
The most important specimens, Zhou says, "are not discovered by scientists at the city's fossil shops, but at the homes of the dealers or farmers who dug them.
化石燃料的开采历史表明，这些步骤或将带来危害。
The history of fossil-fuel extraction suggests that these processes may do harm.
自此以后，研究者们在同一处遗址上发现了十几种带有细丝或羽毛结构的恐龙化石。
A dozen dinosaurs with filaments or feathers have since been discovered at that site.
这是一位女性原始人的骨骼化石，她的遗体显然是被路过的河马或其他食草类动物踏入了泥泞之中，因此躲过了那些食腐动物的破坏。
After the female died, her remains apparently were trampled down into mud by passing hippos or other herbivores and protected from scavengers.
这是一位女性原始人的骨骼化石，她的遗体显然是被路过的河马或其他食草类动物踏入了泥泞之中，因此躲过了那些食腐动物的破坏。
After the female died, her remains apparently were trampled down into mud by passing hippos or other herbivores and protected from scavengers.
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