But short life& expensive cost of the reduction jar used for the technology risen late, Pidgeon method, have been a hard nut to crack.

1、

How to purposefully process lots of data in the database is a hard nut to crack in the information systems. Report is an important means to solve it.

如何有针对性地加工数据库中的大量数据，是信息系统面临的难题，报表是解决这个难题的重要手段。

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2、

Crikey, is he a hard nut to crack. I don't think he watches MLS.

他是一个严格的教练，我想他不会去观看美国职业大联盟的比赛。

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3、

Due to its unique syntactic and semantic features, English MC has been proved to be a hard nut to crack for L2 learners.

由于其独特的句法、语义特征，英语中动结构对于二语学习者来说是一个十分棘手的语言难点。

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4、

Directional complement has always been regarded as a hard nut to crack in the field of Teaching Chinese as a Foreign Language ( TCFL).

趋向补语历来是对外汉语教学中的一大难点。

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5、

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

语序是一项重要的语法内容，也是学习者在英语、法语和德语学习中碰到的难点。

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6、

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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7、

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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8、

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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9、

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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10、

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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11、

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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12、

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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13、

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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14、

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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15、

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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16、

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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17、

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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18、

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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19、

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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20、

Life ia a chain of moments of enjoyment;

生活是一串串的欢乐时光；

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