Sunday's match will be a tough nut to crack.

周日的比赛将是场硬仗。

youdao

But embedded computing is a tough nut to crack.

但嵌入式计算是一块难啃的硬骨头。

youdao

Michael Jackson appears to be a tough nut to break.

迈克尔·杰克逊似乎是一个颇为棘手的问题。

youdao

Now for the tough nut: ideas for a new, more profitable line of business.

FORBES: Survivor

All the same, Florida looks a tough nut to crack for any Democrat.

ECONOMIST: Two big ’gators pounding away | The

On an afternoon when Fulham's well-organised defence proved a tough nut to crack, Carroll's improved mobility and goal threat were plain to see.

BBC: Chris Hughton talks up Andy Carroll's England claims