ambivalent
  (a.)矛盾的,好惡相剋的
  am·biv·a·lent /-lənt/ 形容詞
  利害兩值(具有利害兩種效果的基因),矛盾心理的,矛盾情緒的
  ambivalent
       adj 1: characterized by a mixture of opposite feelings or
              attitudes; "she felt ambivalent about his proposal";
              "an ambivalent position on rent control"
       2: uncertain or unable to decide about what course to follow;
          "was ambivalent about having children"