的确，从蜗牛身上提取的紫色物质曾经非常昂贵，在当时的社会，只有富人才能买得起。
Indeed, the purple colour extracted from a snail was once so costly that in society at the time only the rich could afford it.
那么，在从地球上最古老的岩石中提取的岩石样本中，我们发现了什么液态水环境的证据呢？
So, what evidence of a liquid water environment did we find in rock samples taking from the oldest rocks on Earth?
这种药物是从原产于南美洲的金鸡纳树的树皮中提取的。到了1856年，对这种药物的需求已经超过了现有的供应。
The drug is derived from the bark of the cinchona tree, native to South America, and by 1856 demand for the drug was surpassing the available supply.
从阿拉斯加东南海岸岛屿的洞穴中提取的化石的放射性碳年代测定法表明，在最后一个冰河时代，该地区至少有一部分保持无冰状态。
Radiocarbon dating of fossils taken from caves on islands along southeastern Alaska's coast suggest that at least a portion of the area was remaining ice-free during the last ice age.
蓝色染料是从靛蓝植物中提取的。
在炼油厂，从地下提取的原油被分离成天然气、汽油、煤油和各种其他类型的油。
At a refinery, the crude oil from underground is separated into natural gas, gasoline, kerosene, and various oils.
非洲人现在同样热衷于亚洲药物：青蒿素，一种从中国灌木中提取的、非常有效的治疗疟疾的药物。
Africans are now just as keen on Asian medicine: artemisinin, a highly effective malaria remedy derived from a Chinese shrub.
从这些人类遗骸中提取的DNA可能有助于回答太平洋人类学中最令人困惑的问题之一：所有太平洋岛民是来自一个源头，还是不同源头呢？
DNA teased from these human remains may help answer one of the most puzzling questions in Pacific anthropology: did all Pacific islanders spring from one source or many?
这种物质是从海藻中提取的。
然后您就可以浏览并选择希望提取的项。
You can then browse and select the items you wish to be extracted.
你可以服用由这些药用菌提取的口服液或胶囊。
正是这种记忆“阻塞”了你真正想要提取的那个信息。
It's this memory that seems to block the retrieval of the one you really want.
该公司称这种轮胎可谓极为环保，其组分的80%都是从非石油原料中提取的。
The company says its tyres are among the greenest produced, with 80% of their ingredients derived from sources other than petroleum.
火星上存在生命的唯一可信依据将会是我们实验室里有从返回任务带回的样本中提取的微生物。
The only convincing evidence for life on Mars will be when we have a microbe in the lab from a sample return mission.
NLTK中包括一个用于单词词干提取的极好算法，并且让您可以按您的喜好定制词干提取算法。
NLTK includes an excellent algorithm for word stemming, and lets you customize stemming algorithms further to your liking.
这是回收材料第一次被运用在生产奥运会的奖牌中，历史上的奖牌都是从矿藏中提取的精炼商用材料。
This is the first time that recycled materials have been added to Olympic medals, which historically have been made from mined mineral deposits refined for commercial use.
据美国环保署说，与普通汽油相比，在一个靠沼气发电的现代炼油厂使用玉米提取的乙醇能使温室气体排放降低20%。
According to the EPA, ethanol produced from corn at a modern refinery powered by biogas can represent a 20 percent greenhouse gas reduction compared with regular gasoline.
木糖醇作为一种产品最先是19世纪在芬兰从桦树上提取的，之后作为不影响糖尿病患者胰岛素分泌的安全甜味剂而在欧洲普及。
Xylitol as a product was first derived from Birch trees in Finland in the 19th century and was popularized in Europe as a safe sweetener for diabetics that would not impact insulin levels.
就连玩具制造商都察觉了这个趋势。“发现DNA探索者”是一种适合10岁以上儿童的玩具，它能帮助孩子们提取和绘制DNA图谱。
Even toymakers have noticed the trend-the Discovery DNA Explorer, suitable for those over ten years old, helps children extract and map DNA.
曲线看上去就像在“流动”一样，这是因为我们人类有从周围世界里提取秩序的倾向，即使根本就没有什么秩序。
A curve looks like it's "flowing" because our human inclination is to extract order from the world, even if there's no real order at all.
不过，在我们确切地了解雷公藤提取物有效而且安全之前，还需要进行更多的研究。
But more research needs to be done before we know for certain that TwHF extract works and is safe.
很简单，YQL对待各个Web服务就仿佛它们是数据表一样，允许开发人员制定类似SQL的查询以便从其中提取信息。
Very simply, YQL treats individual web services as though they were data tables, allowing developers to formulate SQL-like queries to extract information from them.
本教程逐步讲解提取业务解释的整个过程。
This tutorial takes you through the entire process of extracting business explanations step by step.
XPath 1.0是一种W3C推荐标准，它定义了一种能够提取部分XML文档的语言。
XPath 1.0 is a W3C Recommendation that defines a language that provides the capability to extract portions of an XML document.
谈及将来，多西认为未来5年最大的技术挑战是如何实时提取相关信息。
Moving forward, he thinks the next great big tech challenge for the next five years will be extracting information in a relevant way in real time.
于是，来自其他研究所的多名科学家也参与进来，继续改进提取工艺，并进行更多的临床试验。
Many scientists from other institutes then joined efforts to improve the extraction procedures and conduct clinical trials.
这些超级浓缩的提取物只需使用少许用量，便会使鸡尾酒平添一份令人惊喜的香味。
Thesesuper-concentrated extracts can be used in minute quantities to addunexpected flavours to drinks.
这些超级浓缩的提取物只需使用少许用量，便会使鸡尾酒平添一份令人惊喜的香味。
Thesesuper-concentrated extracts can be used in minute quantities to addunexpected flavours to drinks.
应用推荐