Coal tar has been a historic contribution to modern organic chemical industry.
煤焦油曾为近代有机化工作出了历史性贡献。
They have a historic contribution in overturning feudal ideas and creating modern family novels.
两部作品对封建思想的颠覆、对现代家族小说的建构，均作出了历史性的贡献。
They have a historic contribution in overturning feudal ideas and creating modern family novels.
两部作品对封建思想的颠覆、对现代家族小说的建构，均作出了历史性的贡献。
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