That's a tough call.

那是个艰难的决定。

《牛津词典》

It is a tough call to make.

这是一个艰难的决定。

youdao

This is a tough call for me to make.

这是需要我做出的一个艰难决定。

youdao

So they thought, "Alright, if the company is so great, if we have such a bright future, why you don't do a better job for your employees than the other Internet companies?" It was a tough call for me.

于是他们觉得：“如果百度真这么好，如果前景真的如此光明，为什么不能在员工待遇方面,做得比其他公司更好呢？“，那时我感觉左右为难。

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It's another tough call and one that's no closer to being clarified after this week's revelations.

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What makes getting the 330xi a tough call is the price--and what you get for it.

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For an oil executive trying to decide on a refinery investment, picking who's right is a tough call.

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