she is a very determined person.

她是一个很坚决的人.
这句话对
你的词典有问题.
determined
de.ter.mined
AHD:[d¹-tûr“m¹nd]
D.J.[d!6tT8m!nd]
K.K.[d!6tPm!nd]
adj.（形容词）
Marked by or showing determination; resolute:
被决定了的；坚决的：
was engaged in a protracted struggle with a determined enemy.
致力于与死敌的持久战