Sometimes convenience or practical necessity or just the fancy of an influential person can establish a fashion.
有时，某种便利或实际的需要，或仅仅是一个有影响力的人物的幻想就可以引领一种时尚。
The meaning of "required" here is that of practical necessity.
这里“需要”的意义，就是实际上的需要。
The recount is a practical necessity but has no basis in electoral law.
重新计票有实际的必要性，却无选举法作为法律基础。
This is partly out of practical necessity: it is indeed thin and lank.
当然这里面有实际的必要性，我的发质稀疏平直。
In large businesses separation of ownershipand management is a practical necessity.
大型商业组织在实际的生产运作过程中，将公司的所有权和经营权分离开是很有必要的。
If you must use such a file system, employing multiple volumes is a practical necessity.
如果必须使用这样的文件系统，可能有必要使用多个卷。
It's of practical necessity and significance to legislate on rural medical security.
制定我国农村医疗保障法既有现实必要性，又有重要意义。
Once considered a luxury, the microwave oven had developed into a practical necessity for a fast-paced world.
曾被视为是奢侈品的微波炉，在这个快节奏的世界中已经成为一种现实生活的必需品。
If you have thin, lank locks - or indeed a thick and unruly mop - then keeping it short may be a practical necessity.
如果你的头发又薄又稀或者又厚又翘，那么或许出于实际考虑，还是短发好。
"Shutting the community out of EBay's upcoming ipo-a practical necessity-seemed ungrateful," the LA Times reports.
《洛杉矶时报》报道“由于eBay即将首次公开募股，关闭所在社区是实际需要，但似乎有点忘恩负义。”
The necessity which combines the judgment of the beautiful with delight is neither a theoretical nor a practical necessity.
这种把美的判断和愉快连接在一起必然，既不是一种理论上的必然，也不是一种实践上的必然。
Therefore, the design of reliable, safe, convenient resistance, capacitance, inductance tester of great practical necessity.
因此，设计可靠，安全，便捷的电阻，电容，电感测试仪具有极大的现实必要性。
China has made a practice of police socialization for a long time, and has its practical necessity to put forward this idea.
我国很早就提出了实行警务社会化，提出此理念有其现实的必要性。
Backward compatibility is required in cases where a contract or practical necessity defines the need to support previous versions.
如果合约或实际情况要求支持以前的版本，就必须保持向后兼容性。
A car may be a practical necessity for a student who works long hours after classes or who lives with his or her family in another town.
如果一个学生放学后还要工作到很晚或是和家人住在另一个城镇，车也许对他来讲是必需品。
The practical necessity and the possibility for them to commit an international crime are discussed. In addition, the author gives her conception of the relative liability system.
在论证其作为国际犯罪主体的必要性和其实施国际犯罪行为的可能性的基础上，笔者还提出了对追究其国际犯罪刑事责任制度的一些构想。
Imagination in this sense, not being limited to the acquisition of exact knowledge by the requirements of practical necessity, is, up to a certain point, free from objective restraints.
这种意义上的想象(不限于以由于实际的必要性而获得的精确的知识)，在某种程度上，免于客观的限制。
To conform to the laws of a particular plane is a practical necessity, and at this time the flying saucer craft simply cannot afford to stay betwixt and between for any indefinite period.
遵循特殊层面的法则是实际的需要，这时，飞碟根本不能承受任何不确定期间的模棱两可的和介于两者之间的停留。
Reaching this target is not only a practical necessity to ensure economic growth and employment, but also an important condition for restructuring the economy and raising its level of performance.
实现这一目标，既是保增长、保就业的现实需要，也是调结构、增效益的重要条件。
Born of necessity as much as of insight, it answered an absurd practical problem.
它因需要而诞生，而且独具洞见，解决了一个荒谬而实际的问题。
Rejecting heat from these systems in real time is not practical, making thermal energy storage a necessity.
实时隔绝这些系统的热能是不切实际的，存储它们变得尤为重要。
According to the environment crime serious social hazardous nature and the practical significance and the necessity, proposed the environment crime is should establish the danger to violate.
根据环境犯罪的严重社会危害性及现实意义和必要性，提出环境犯罪是应该设置危险犯的。
Thus, this chapter aims to solve the share problems and perfect the theoretical and practical basis for Suggestions from the Angle of its feasibility and necessity.
本章的讨论和结论为解决以下提出的具体问题和完善建议奠定了理论基础和实践基础。
Firstly, this paper brings out the requirement of the Safety Instrument System in practical application and introduces the necessity of the PFD evaluation for SIS.
首先介绍了安全仪表系统在实际应用中的需求以及安全仪表系统的硬件失效概率评估的必要性。
According to the individual comfort curve and environment of practical work, presents the necessity and reasonableness of individual control in the HVAC building.
针对个人舒适曲线和实际的工作环境提出了个人调控在空调房间的合理性和必要性。
Based on practical work, this essay explains the essence of value engineering principle, the necessity and the method of bidding in equipment purchasing.
结合实际工作，阐述了招标采购的必要性、价值工程原理的含义以及运用价值工程原理，进行设备公开招标的方法。
It reviews the problems existing in the previous practical teaching, and combines the feedback from the society, necessity of teaching of the basic engineering techniques.
文章首先回顾过去实践教学存在的问题，再结合社会反馈信息，意识基本技能教学的必要性。
It reviews the problems existing in the previous practical teaching, and combines the feedback from the society, necessity of teaching of the basic engineering techniques.
文章首先回顾过去实践教学存在的问题，再结合社会反馈信息，意识基本技能教学的必要性。
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