叙述了与石油化工有关，并起主导作用的石油基精细化工国内外技术进展。
Domestic and foreign technological advances of the petro-based fine chemical industry, a leading role played in petrochemical industry, are discussed.
你要主导你的陈述，而不是仅仅做一个叙述者。
You need to be an integral part of your presentation, not just a narrator.
你要主导你的陈述，而不是仅仅做一个叙述者。
You need to be an integral part of your presentation, not just a narrator.
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