大胆果断的人；暴躁的人

tough out───生活艰难；咬牙坚持

toughs out───生活艰难；咬牙坚持

doughnut───n.油炸圈饼；圆环图；环状物，电子回旋加速器环状真空室

rough cut───粗纹；粗切削

rough out───草拟；概略地画出

tough guy───硬汉

toughed out───生活艰难；咬牙坚持

There are some promising drugs in the pipeline. But it's been a really tough nut to crack.───有一些前景不错的药品已经在研发之中，但要真正实现确实还很不容易。

The lock on the door is a real tough nut to crack.───门上锁真是一件棘手的事情.

That guy is a tough nut.───那个家伙很难缠.

It'strikes me that he's right a tough nut to crack.───在我看来,他可是个难对付的家伙.

She's a tough nut to crack ; I don't think she'll give us permission.───她这个人不好说话, 我想她不会答应我们的.

The Daily Express describes Dr Carey as a pretty tough nut.───《每日快报》把凯里医生说成是特别难对付的家伙。

But embedded computing is a tough nut to crack.───但嵌入式计算是一块难啃的硬骨头。

Painting the ceiling was a tough nut to crack.───油漆天花板是件难事.

He's a tough nut to crack.───他是个很难说服的人.

My brother thought he was a tough nut but I saw him cry that day.───我哥哥自认为是很坚强的人,但那天我看见他哭了.

This old man is a tough nut to crack!───这个老头是个难以说服的人.

It strikes me that he's right a tough nut to crack.

Shearer, a tough nut not inclined to whinge, said his ankle was like a pudding.

West Ham will be a tough nut to crack especially with big Lee in good form at the moment.

He's a tough nut to crack.

The final exam was a tough nut.

Daytime television is a tough nut to crack. New shows have to be good enough to beat the old favorites.

It is a tough nut for him to crack.

He is a tough nut.

She's a tough nut to crack ; I don't think she'll give us permission.