to remove or obtain a substance from sth, for example by using an industrial or a chemical process 提取；提炼◆The gas is extracted from coal. 煤气是从煤炭中提炼出来的。◆We should be able to extract 80 million barrels of oil from the site. 我们应当能够从这个油田提取 8 000 万桶石油。
to get money, information, etc., especially from sb who is unwilling to give it 索取；设法得到◆The government is confident it can extract an emergency loan from the IMF. 政府有信心从国际货币基金组织争取到一笔应急贷款。
to find information in a computer file, a document, etc. to use for a particular purpose 摘录，查找（计算机文件）◆The program extracts email addresses from websites. 这一程序从网站上查找电子邮件地址。