Word order is an important grammatical item. It is also a hard nut to crack in English, French and German study for the learners.

1、

Negative ambiguity, which is a hard nut to crack in language teaching and learning, has long been interested by language researchers.

否定歧义句是历来众多研究者所关注的一个问题，也是英语学习和教育中常遇到的一个棘手的问题。

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2、

The current situations of urban hidden land market need the emergent study that will be a hard nut to crack for the urban development.

城市土地隐形市场状况的分析与研究，是目前城市发展中迫切需要解决的问题。

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3、

How safety, develop efficiently the petroleum resources is a hard nut to crack to put in the petroleum industry in front.

如何安全、高效地开发石油资源是摆在石油工业面前的一道难题。

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4、

But accordingly, the university graduate employment has become a hard nut to crack, which becomes a hot social issue.

但与此同时，大学生就业问题也日渐突出，并成为一个社会关注的热点问题。

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5、

All the candidates are very excellent. It's indeed a hard nut to crack to choose the best one.

所有的候选人都非常的优秀，要从中选出最好的一个的确是件很难的事。

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6、

I'll get the information from him eventually but he's a hard nut to crack and it may take a long time.

我最终会从他那里获得情报的，不过他是个难以对付的人，因而时间可能要很长。

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7、

How to evaluate the value of the software product is a hard nut to crack for software product designer and user.

如何评价软件产品的价值是困扰软件开发商和用户的一个难题。

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8、

brawl The brawl in the street could be heard in the house nearby.

n.争吵，打架附近的房子都可听得到街上的争吵。

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9、

Executives brawl about responsibilities, titles, bonuses and even car park spaces.

高管们为职责、头衔、奖金乃至停车位吵得不可开交。

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10、

The budget brawl is a precursor to the debt ceiling fight.

预算争斗是债务上限争斗的序幕。

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11、

Unarmed brawling and stabbing were the most common types of violence.

徒手打斗和刺伤是最常见的类型。

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12、

The company is planning to expand in Poland with a chain of franchise shops.

那公司正计划以一批连锁特许经销商店的形式在波兰扩展业务。

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13、

Further study showed that each little bacterium had a chain of dense particles inside, which proved magnetic.

更深的研究显示，每种小细菌有一种内在的密集的链子物质。

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14、

A chain of radio or television broadcasting stations linked by wire or microwave relay.

广播网由线路或微波中转站连接的电台或电视台网络。

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15、

Life ia a chain of moments of enjoyment;

生活是一串串的欢乐时光；

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16、

You see the whole thing is a chain of logical sequences without a break or flaw.

你看，这件案子整个就是一条在逻辑上前后相连、毫无间断的链条。

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17、

Financial disruption would be massive, resulting in a chain of bankruptcies.

将大规模发生金融紊乱，引发一连串破产。

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18、

A chain of ethical issues triggered by the technology is exactly the main content of legal rules.

基因医学技术引发的一系列伦理问题正是法律规范的中心内容。

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19、

Japan's standoff with China centers around a chain of East China Sea Islands.

日本与中国的对峙主要围绕东中国海（East China Sea，中国称东海）上的一系列小岛展开。

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20、

Life is a chain of moments of enjoyment;

糊口是一串串的欢愉年光；

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