Some of these coats are hard—like the shell of a nut—for extra protection.
其中一些表皮很坚硬——就像坚果的外壳——可以提供额外的保护。
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。
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。
Each has his own hard nut to crack.; Each has his own trouble.
各有一本难念的经。
一种难以寻找而且难以对付的坚果。
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。
Other great teams can comprise smooth negotiator and hard nut (Mr Nice and Mr Nasty) or a brilliant creative brain matched with a first-class commercial mind.
处事圆滑的人与刺儿头能组成好搭档（一个唱红脸，一个唱白脸），创造性人才与一流商业头脑也是良配。
他是一个难对付的家伙。
The question of world hunger is a very hard nut to crack . I doubt if we'll find the answer to it in my lifetime.
世界性的饥饿问题是个极其难以解决的问题，我恐怕人们在我这一辈子都找不出解决的办法。
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。
ABSTRACT The uncertainty in Supply Chain Management is a hard nut to be cracked that can not be obviated for companies.
供应链中的不确定性是企业和组织在管理和决策中不可回避却又十分棘手的问题。
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。
To crack this hard nut, I would like to propose several practical recommendations as follows.
为解决这个难题，我想提出如下几点实用的建议。
Sudan was a hard nut to crack.
苏丹真的是难啃的骨头。
The rich brocade met each time what hard nut to crack or sad affair, the brocade lotuses all cry stiller than rich brocade badly.
每次锦绣遇到了什么难题或是伤心事，锦莲都哭得比锦绣还厉害。
Give examples to say, if you want to have a chat boxing match or mathematics hard nut to crack with me, that just like in play piano the cow.
举例来说，如果你想和我聊聊拳击比赛或是数学难题，那无异于对牛弹琴。
The rich brocade met each period what hard nut to crack alternatively sad affair, the brocade lotuses all cry stiller than rich brocade badly.
每次锦绣遇到了什么难题或是伤心事，锦莲都哭得比锦绣还厉害。
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。
I know! He's a hard nut to crack.
我知道。他是个难以了解的人。
The project of a bank office building in a special urban environment provides a hard nut to crack but also a chance to challenge a new form.
一幢在特定都市环境中的银行大楼设计，给设计者提出了苛刻的设计条件，同时也提供了创造新形式的机遇。
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。
我认识他，他是个感恩不化的人。
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。
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；
In English skill training for listening, speaking, reading and writing, listening takes an important position, yet it is also a hard nut to crack in English language learning.
在英语“听、说、读、写”技能训练中，听占有重要的地位，但这也是在英语学习中不易突破的一个难关。
The unit in translation is a hard nut to crack.
该单位在翻译是很难啃的骨头。
Mr. White is a hard nut to crack.
怀特先生是个难以对付的人。
Mr. White is a hard nut to crack.
怀特先生是个难以对付的人。
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