嫉妒是一种预防的情感，它寻求阻止失去“，从位于长滩的加州州立大学退休的心理学教授Ralph Hupka说：”嫉妒让我们采取预防措施。
It seeks to prevent loss, "said Ralph Hupka, Professor of Psychology, Emeritus at California State University at Long Beach." Jealousy causes us to take precautionary measures.
我们必须采取预防措施来减少这个地区的犯罪。
We must take preventive measures to reduce crime in the area.
在抚养我们的女儿时，我们仔细权衡了许多决定——送她们上什么学校，上什么教堂，什么时候给她们手机，采取什么预防措施。
We've weighed so many decisions so carefully in raising our daughters—what school to send them to and what church to attend, when to give them cell phones, and with what precautions.
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