不是必要的

Phatic language,being one of the most frequently used language forms in our daily life,plays an important role in communication among both native and non-native speakers.Phatic language differs greatly from one culture to another due to the different language environment in which the speakers live.Therefore,language users have to pay close attention to inter-cultural study in order not to make serious blunders during their discourses.

文摘：应酬语是人们在日常生活中用来交际的一种语言现象，由于每个国家或民族的文化和社会习俗相互之间存在很大的差异，人们所使用的应酬语也不尽相同，因此，英语学习者和从事语言教学和研究的工作者必须对跨文化方面的语言现象进行研究，从中找到它们的共性与差异，以避免在语言交际过程中产生不必要的错误和误解。

The second is the change of his style. The previous figures just pay attention to size and shape, which might reflects Deng Jianjin's pursuit of professional identity in his sub-consciousness. Along with the art trend of pop and pictorialization, this pursuit is not necessary, or his achievement no longer depends on this identity, so the pursuit of self-image turned into the self-expression of form.

其二是风格的变化，以前的人物表现讲究体积与塑造，这可能反映了邓箭今在潜意识中对专业身份的追求，随着艺术的波普化与图像化，这种追求已不必要，或者说他的成就已不取决于这种身份，于是形象的自我追寻变成形式上的自我表现。

Does this president have a strategy, backed if necessary by force, to reorder the world?

这个总统的战略是不是在必要的时候通过军队的支持来重组世界呢？

What you really need are earlier versions of files, so that you can, if necessary, roll back changes you don't want to keep.

你真正需要的是可能是文件的早期版本，因此你能在必要时放弃你不想保留的更改。

Sometimes those words come non-verbally from the circumstances you face. Sometimes they're the well-meaning but unnecessary comments from a friend. Other times they are self-accusing views from the depths of your own pool of poor self-esteem.

提要 你最近有没有听到任何令你沮丧的话﹖有时那些令人沮丧的话不是口头上的，而是环境给你的；有时是朋友出於好意但毫无必要的评语；也有时是源於个人的自卑感所造成的自我谴责。

Guo Songhai: hard to see how much determination we have, but I think this system is very necessary, the real estate market instability for the entire socio-economic impact is enormous.

郭凇咳：很难看出有多少我们有决心，但我认为这个制度是非常必要，房地产市场的不稳定对整个社会经济的影响是巨大的。

Comments are not a necessary item in xhtml, but they can be useful to document the xhtml source.

评论不是在XHTML必要的项目，但它们可能是有用的XHTML文件的来源。

When things go wrong as they sometimes will, When the road you're trudging seems all uphill, When funds are low and the debts are high, And you want to smile, but have to sigh, When care is pressing you down a bit-- Rest if you must, but don't you quit. Life is queer with its twists and turns, As every one of us sometimes learns; And many a fellow turns about When he might have won, had he stuck it out. Don't give up though the pace seems slow-- You may succeed with another blow. Often the goal is nearer than It seems to a faint and faltering man; Often the struggler has given up When he might have captured the victor's cup; And he learned too late when the night came down, How close he was to the golden crown. Success is failure turned inside out-- The silver tint of the clouds of doubt, And you never can tell how close you are, It may be near when it seems afar; So stick to the fight when you're hardest hit; It's when things seem worst that you mustn't quit .

当天有不测风云发生当你脚下的路变得崎岖当你囊中羞涩却又债台高筑你想要微笑，却不得不叹息当烦恼向你侵袭而来你有必要休息，但绝对不要放弃生命因波折和坎坷而有特色我们每个人有时候都懂得许多人茫然四顾如果他坚持到底，他会成功当事情似乎停滞不前也请不要放弃只要稍加努力你也许就会成功成功的日子比一个脆弱的人想到的更接近奋斗者经常在离成功只有一步之遥时轻易选择了放弃当夜幕降临时他会意识到他离成功是多么接近可是，已经太迟成功是失败的另一种形式是重重疑云上的银色光辉你从不知道你是多么接近它它也许就在眼前却看似遥不可及所以，在最困难的时刻也要坚持奋斗越是困难，越不能放弃！

Once uncontroversial, it has recently been the focus of campaigns on the grounds that it may be cruel and unnecessary.

以前它是一个非争议性的问题但是最近它是被讨论的重点了，因为对善待动物的组织来说这可能是残酷的和不必要的。

That stern creed had taught the depravity of man, the impossibility of a natural, unaided growth toward perfection, and the necessity of constant and anxious effort to win the unmerited reward of being numbered

这个严厉的教条教唆人们堕落，自然独立，完美无缺的诞生的不可能性，以及坚持不懈焦急的努力，去赢取竞选中屈指可数的不应该的回报是有必要的。

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。