爸爸最终下定决心决定再也不允许我玩电脑游戏了，直到有一天我把成绩搞上去。

Father put his foot down and said no more computer games until my grades improved.

youdao

在她最终下定决心之前，她仔细考虑了这个决定多年。

She deliberated over the decision for a good few years before she finally made up her mind.

《柯林斯英汉双解大词典》

当麦当劳决定它想要一个新的面包供应商时，哈林顿决心赢得合同，尽管她没有经营面包店的经验。

When McDonald's decided it wanted a new bun supplier, Harrington became determined to win the contract, even though she had no experience running a bakery.

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Milton seemed to have decided against marriage as he was making the decision to wed himself to his poetry instead.

那里弥尔顿似乎已经决定不结婚了,因为他已经下定决心要致力于诗歌创作。

耶鲁公开课 - 弥尔顿课程节选