4周搞定2000+托福核心词
speculation = specul(看) + ation(表名词) = 仔细看->思索；推测
abbrevate = ab(表加强) + brev(短) + ate(表动词) = 缩写
accelerate = ac(使) + celer(快) + ate(表动词) = 加快
看准了→推测
speculate
常考释义
It has been speculated that, as the blowholes evolved and migrated to the top of the head, the neural pathways serving sense of smell may have been nearly all sacrificed.
有人推测，由于气孔经过进化被转移到了头顶，所以担负嗅觉功能的神经通路可能已经全部消失。
来源于：剑雅4-Test1vi. 投机；做投机买卖
vi. 推测；猜测；推断
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