不是必要的

Xinhua net Tianjin on January 26 report the tall hair that Spring Festival long holiday is computer virus period, program of a few baleful trojans, virus can use a net to go up the operating system that game of shopping website, network, mobile phone, email or transmission of instant communication tool affect large-scale computer user, bring pecuniary loss and needless trouble to the user.

新华网天津1月26日电春节长假是计算机病毒的高发期，一些恶意木马程序、病毒会利用网上购物网站、网络游戏、手机、电子邮件或即时通信工具传播感染广大计算机用户的操作系统，给用户带来经济损失和不必要的麻烦。

Shading of glass to reduce unwanted heat gain is critical.

玻璃上的遮阳可以减少不需要的得热，这是非常必要的。

8S4P%B#v9coften the greatest source of unwanted heat gain in a home.

0\玻璃上的遮阳可以减少不需要的得热，这是非常必要的。

Fortunately, it turned out that as the scale of markets expanded and technologies evolved, in most industries there were many firms, perhaps not enough that the economy was well approximately by the perfect competition ideal that underlay Smith's theorem, but sufficiently great that the worries about monopoly capitalism seemed ill-founded.

幸运的是，随着市场规模的扩张和技术含量的增加，在大多数的产业有了更多的公司，虽然不足以说经济已经好到在亚当斯密的理论下的完全竞争的理念，但也足够说明担心垄断资本主义似乎是不必要的。

So, it is an extremely urgent and essential demand for the worker or hearing impairer exposure on a high-intensity industrial noise how the effective environmental noise can be canceled without influence other meaningful sounds.

因此，如何有效的消除环境噪音而不影响其他有意义的声音，对於在大量工业噪音下工作之正常听人或听障者而言，都是极为迫切与必要的需求。

A word without the experience of time is impoverished and lacks an essential quality of human experience.

一种不能体验出时间的词汇是贫乏的，缺少了必要的人类经验。

It is necessary to provide for teaching precisely in proportion as the learner is unable to learn.

不知足的学习是重要的一个规则，有必要提供一个均衡比例的学习给一些没条件去学习的人。

Their indolent attitude was the cause of much unnecessary pain and suffering.

他们懒惰的态度是引起很多不必要的痛苦和折磨的原因。

All I did was kill one lousy Kraut," one says,"It was an unnecessary risk, Garrison snaps.

我所做的一切只是干掉一个肮脏的德国鬼子，"一个人说，"这是不必要的冒险。

His Kuomintang arrogance or made any necessary self-criticism, and we can hardly be satisfied with that.

但是还没有抛弃国民党的自大精神，还没有必要的自我批评，这是我们所不能满意的。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。