以下为句子列表：
英文: Urea (carbamide)One of the simplest organic compounds and the first synthesized from inorganic raw materials (see inorganic compound), by Friedrich W?hler (1800-82) in 1828.
中文: 尿素(亦称碳醯胺):最简单的有机化合物之一。1828年由德国化学家维勒(1800～1882)，第一个从无机材料合成的。
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英文: 2 Petroleum crude oil: Refers to naturally occurring crude oil that is mixtures of hydrocarbon compounds that contain mainly paraffin hydrocarbon, cycloparafin hydrocarbon, and aromatic hydrocarbon.
中文: 二石油原油：指一种源于自然界之原油，为碳氢化合物之混合物，其主要成分为石蜡烃、环烷烃、芳香烃等。
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英文: A device for burning or chemically altering unburned or partially burned carbon compounds in exhaust gases.
中文: 排气后燃器用以充分燃烧或从化学上改变废气中未完全燃烧或部分燃烧的含碳化合物的设备
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英文: A lack of trust in private banks compounds the challenge of attracting new money.
中文: 由于投资者缺乏对私人银行的信任，吸引新资金的挑战就更大。
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英文: A more detailed review on application of gas chromatograph and its coupled techniques in the environment organo tin compounds analysis was presented in this paper.
中文: 该文就气相色谱及其联用技术在环境中有机锡化合物的测定进行综述。
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