As geologists, we examine layers of sediment on the Earth' s surface to approximate the dates of past geologic time periods.

作为地质学家，我们研究地球表面的沉积层以估算过去地质时期的年代。

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The plural 's' is not a free form, as it must always be attached to a noun.

表示复数的s不是自由语素，必须附着于名词。

《牛津词典》

In the 1980's, however, Bakker's contention began to be questioned, as a number of scientists found growth rings in the bones of various dinosaurs that are much like those in modern reptiles.

然而，到了20世纪80年代，巴克的论点开始受到质疑，因为许多科学家在各种恐龙的骨骼中发现了与现代爬行动物相似的生长环。

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"And as Iran's leaders continue to ignore their obligations, there should be no doubt: they,too, will face growing consequences.

VOA: special.2010.01.30

Milton's Lady doesn't proceed as we expect her to, to marshal further arguments for the moderate fulfillment of one's conjugal obligations.

弥尔顿笔下的女士没有按我们期望的那样进行，整理有关人们适当满足婚姻权利义务,的进一步论点。

耶鲁公开课 - 弥尔顿课程节选

And if you want to lose body fat as far as that kind of weight, that's the way to do it.

如果你想要减掉脂肪和重量，这就是方法。

要拥有好身材 - SpeakingMax英语口语达人

Transocean, too, rejected it as self-serving and pointed to flaws in the well's design, as well as to BP's management of the project.

ECONOMIST: BP casts the blame for the Gulf oil spill widely

Thomas Firey, a senior editor at the conservative Cato Institute and member of generation X, said it's unclear as to what's going to happen to Social Security.

CNN: Are baby boomers to blame for debt crisis?

However, the Pumas' limited match plan of swamping the opposition with deep kicks and relentless forward play finally came unstuck against a South Africa side who go into next weekend's final as favorites to stop England's bid to become the first nation to retain the title.

CNN: Springboks face England in final