An animal that can remember the significance of that large, nasty-looking thing with the big teeth and sharp claws will survive longer and produce more offspring.
    【核心詞匯】
    significance n.意義，重要性
    nasty a.下流的，骯臟的
    survive v.幸存，生還
    offspring n.后代，子孫
    【結(jié)構(gòu)分析】本句主干是An animal will survive longer and produce more offspring。主語animal后接關(guān)系代詞that引導(dǎo)的定語從句，關(guān)系代詞代替animal在從句中作主語。在從句中，謂語動詞remember的賓語是the significance，它的后置定語為of that large, nasty-looking thing with the big teeth and sharp claws ;介詞短語with the big teeth and sharp claws補充說明thing的特點。
    【參考譯文】一種動物只有記住了長相丑惡(具有巨大牙齒和鋒利爪子)且身體龐大的重要性，才能生存長久并繁殖更多的后代。