Building such a bridge over the bay was a hard nut to crack but the local government made it within two years.

在海湾上建造这样一座桥是一件困难的事情，但当地政府在两年内完成了。

Sometimes, it is a hard nut to crack without an expert's help.

有时候，如果没有专家的帮助，这是一件很难解决的事情。

The problem of hunger worldwide is a hard nut to crack. I'm afraid that scientists need to put in more efforts.

全球性的饥饿问题是个棘手的问题，恐怕科学家们需要付出更多的努力。

Each has his own hard nut to crack.; Each has his own trouble.

各有一本难念的经。

A hard nut to crack and find!

一种难以寻找而且难以对付的坚果。

Sudan was a hard nut to crack.

苏丹真的是难啃的骨头。

I know he, he is a hard nut.

我认识他，他是个感恩不化的人。

I know! He's a hard nut to crack.

我知道。他是个难以了解的人。

Mr. White is a hard nut to crack.

怀特先生是个难以对付的人。

He's a hard nut to crack.

他是一个难对付的家伙。

She's a hard nut to crack.

她是一个难对付的家伙。

It is a hard nut for him to crack.

这对他而言是一个难题。

This problem is a hard nut to crack.

这个问题是块难啃的骨头。

Mind you, she is a hard nut to crack.

小心，这是个难对付的女人。

Jeff: This is indeed a hard nut to crack.

杰夫：这实在是一个棘手的问题。

They say that she is a hard nut to crack.

据说她是一个难驯服的女人。

The unit in translation is a hard nut to crack.

该单位在翻译是很难啃的骨头。

He 's surely a hard nut, nobody likes approaching him.

他确实是一个难对付的人，没有人喜欢接近他。

Position preposition is a hard nut of English teaching.

方位介词是英语教学中常碰到的一个难题；

He is not only a troublemaker but also a hard nut to crack.

他这个人并不只很会惹麻烦也很难缠。

He is really a hard nut to crack. You need to be more patient.

他是一个很难对付的人，你需要更多的耐心。

But I don't like her boyfriend, Jack. He's a hard nut to crack.

但是我不喜欢她的男朋友，杰克。他是个难对付的人。

Actually, EST Reading is a hard nut for English teachers to crack.

然而，科技英语阅读教学是个难解的课题。

Employee turnover is a hard nut to crack for human resource management.

雇员离职是人力资源管理面临的一个棘手问题。

Filtering noise in the image signal has been one big hard nut to crack.

图像信号中噪声滤除一直是一大难题。

My manager is a hard nut to crack. He always shouts at me about what I have done.

经理是个很难对付的人，他总是对我做的事大吼大叫。

Benjamin: The boss is a hard nut to crack. He always shouts at me for trivial things.

本杰明：老板是个狠角色。他经常因为一点小事儿对我大吼大叫。

How look after both sides, to each women, is all life together eternal hard nut to crack.

怎么样兼顾，对每一个女人来说，都是人生一道永恒的难题。

Shaping of double curved face lamella has been hard nut to crack in manufacture trial work.

在汽车车身试制领域，双曲面薄板零件的成形一直是试制工作的难题。