He felt he had to make up his mind for either one thing or another.

他觉得他必须下定决心做点什么事。

youdao

Many have been surprised at the length of time it has taken him to make up his mind.

很多人都为他用这么长的时间才下定决心感到吃惊。

《柯林斯英汉双解大词典》

I can't make up my mind whether to accept the job offer.

我还没下定决心是否要接受这份工作。

youdao

"So it's right that he goes to the inquiry and does so before people make up their own mind.

VOA: standard.2010.01.22

All right, I'm going to give you ten seconds fifteen seconds to make up your mind.

差不多打成平手,其他人现在不知道。

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and you're looking to the menu and there are so many delicious things that she cannot seem to make up her mind.

你们看菜单时，发现有太多美味的菜肴，你的女友一时难以取舍。

I need 课堂 - SpeakingMax英语口语达人

And so when Iraq invaded Iran in 1980, it didn't take very long for the Reagan administration to make up its mind to put its support largely behind Iraq.

NPR: Saddam's Past with U.S. Has Implications for Iraq

In film after film, we have to wait without words for a character to make up his mind to do something, and even at a faster speed the wait can seem interminable.

NEWYORKER: The Artists

The Treasury has up to two years to make its mind up, and although it is bound to be a serious exercise, the political side should not be underestimated.

BBC: Testing the value of the pound