think over think through 有何区别?

think over 通常用在口语里,深思熟虑的意思,表动作
造句: I'll have to think it over carefully before I can say yes or no
think through 同think out, 在理解的基础上,想得很透彻,比think over要强
造句: That answer doesn't work; I don't believe you've thought the problem through