(每日一词）ambivalent

Ambivalent /æmˈbɪv.ə.lənt/ adj. （心情）矛盾的；模棱两可的，含糊不定的

meaning: having two opposing feelings at the same time, or being uncertain about how you feel. 

1) 前缀：ambi- 周围；ambition 雄心壮志（好男儿志在四方，ambi-周围，it- 走+ion 名词后缀，ambulance 救护车）

2) 词根：val- 价值，强大 (value) 

3) 后缀：-ent 形容词（different)

e.g. Many people feel ambivalent about the use of technology in education, recognizing the benefits it can bring but also worrying about the negative effects it may have on students' social and emotional development. 许多人对教育中使用技术感到矛盾，一方面认识到它带来的好处，但另一方面也担心它对学生的社交和情感发展可能带来的负面影响。