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Unit 9 The BrainLanguage Points:1.complex:adj./n.复杂的,难懂的;综合体,体系。例:(1)What the professor said was too complexfor me to understand.教授说的太复杂了,我不理解。(2)Shenyang is an industrial complex.沈阳是一个工业中心。2.complicated:adj.复杂的。例: