pore over (或 on,upon)

• • 仔细阅读；钻研：

    The artist pored over every drawing,trying to guess who drew each one.

    这位艺术家仔细地研究了每一幅画，极力想猜出每幅画的作者。

  • 深入思考：

    She pored over the problem until she solved it.

    她深入地思考了这个问题，直到把它解决为至。