GRE：核心词组之be,susceptible,to:susceptible词根

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be susceptible to 易受影响的
　　释义
　　If you are susceptible to something or someone, you are very likely to be influenced by them.
　　例句
　　Small infants are more susceptible to certain kinds of infections because their immune systems are not totally developed yet.
　　GRE
　　The trees" own defenses raise the threshold of caterpillar vulnerability to the disease, allowing populations to grow denser without becoming more susceptible to infection.
　　树木自身的防御提高了毛毛虫抵御疾病的能力，使得毛毛虫生长的更加密集而不受感染的影响。