8月10日的《神经学》报道，研究结果指出，某些神经性的疾病是如何在病人确诊前存在长达十年之久。

The result, reported in the Aug. 10 Neurology, highlights how some neurological diseases may take hold decades before a person is diagnosed.

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史密斯先生说，“我们发现土壤中含有营养物质，能源，如果500万年前存在水，我们就接近于发现一个可能存在生命的环境。”

"We have nutrients in the soil, energy sources, and if there was liquid water five millions years ago, we're getting close to an environment where life could live," says Smith.

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我对海关例行公事的不耐烦暗示着，几小时前我还不知道存在的克洛艾，已经产生了渴望的状态。

My impatience with the customs ritual indicated that Chloe, who I had not known existed a few hours ago, had already acquired the status of a craving.

youdao

Well, it apparently is not so obvious because in the Americas, before Columbus came-- " pre-Columbian America-- there were no wheeled vehicles anywhere.

好吧，从表面上看这似乎不那么显而易见,因为在美洲大陆，在哥伦布到来之前-,在“前哥伦比亚美洲-,根本没有任何轮式交通工具存在。

耶鲁公开课 - 金融市场课程节选

There is no way to talk about what he's talking about in the kinds of settlements that existed before the invention of the polis, and that I think is worth mentioning.

因为他是无法,在城邦出现前谈论,这种存在形式的居住地的,我认为这一点很值得注意

耶鲁公开课 - 古希腊历史简介课程节选

It is a right that attaches to individuals as human beings, even before government comes on the scene, even before parliaments and legislatures enact laws to define rights and to enforce them.

这种权利依附于个体而存在，甚至早于任何政府的建立，甚至早在任何议会和立法机关,制定法律定义权利并强制实施前，就已存在。

耶鲁公开课 - 公正课程节选