| 单词 | coal tar |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔coal tar〕Between June 2002 and February 2003, Australian Waste Recyclers received more than 200 separate loads of coal tar waste.在2002年6月至2003年2月期间, 澳大利亚废物回收公司回收了200多车煤焦油废料。外研社新世纪〔coal tar〕If coal is heated in the absence of air, coal tar is produced.在隔绝空气的状态下加热煤, 便会产生煤焦油。外研社新世纪〔derivative〕Petroleum is a derivative of coal tar.石油是煤焦油的衍生物。韦氏高阶〔derive〕Petroleum is derived from coal tar and used to make gasoline.石油衍生自煤焦油，用来生产汽油。韦氏高阶〔tar〕Coal tar.柏油美国传统 |
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