必需的

A certain amount of public works — of streets and roads and bridges and tunnels, of armories and navy yards, of buildings to house legislatures, police and fire departments-is necessary to supply essential public

一定数量的公共设施建设，如街道、桥梁、隧道、军营、海军基地，以及议会、警察和消防队的办公设施等，是提供基本的公共服务所必需的。

As braves and hunters were required and valued, it would be the interest of every horde to rear, when possible, its healthy male children.

勇敢的人和猎人是必需的和宝贵的，每一个游牧部落在可能时培养它的健康男孩是利害攸关的。

At least in the nearby universe, gas dissipation is required to produce the high densities observed in bulges out of the low densities in disks.

至少在邻近的宇宙，气体的消散是必需的，以此来形成椭圆星系的高密度和漩涡星系的低密度。

Although usually applying relatively low power can avoid tissue charring, rather higher power is recommended because it is indispensable to achieve necessary damage threshold and the therapy time can be shortened.

虽然常用的相对较低的功率可以避免组织烧焦，但是推荐采用较高的功率，因为它是达到必要的损伤阈值所必需的，而且可以缩短治疗时间。

The raising of my family confers upon me the responsibility to try and make sure they can grow up in a world where mass-murderers are not allowed to rule the planet, despoiling the earth and killing whomever necessary to fit their plans for expansion and domination.

养我的家人赋予我的责任，以尝试，并确保他们能够在成长中，在这样一个世界大众杀人犯均不得统治地球，掠夺地球，并杀害何人所必需的，以适应他们的计划，为扩大和统治。

Reduced to extremest misery and poverty.

艾维利也去了墨菲尔德公园，那里正成为无家可归者的主要聚居地，他对此处困苦人民数目如此之多感到震惊，他们有些住在帐篷里，另一些住在临时搭建的窝棚中，他描述说&许多人都甚至没有一件破旧衣服或者任何必需的器具，没有床，没有木板……他们都坠入极端的悲惨与穷困中。&

But if we regard the object of the battle as what was actually accomplished by it, and what was the universal desire of all Russians (the expulsion of the French from Russia and the destruction of their army), it will be perfectly evident that the battle of Tarutino, precisely in consequence of its incongruities, was exactly what was wanted at that period of the campaign.

如果那次战役的目的是实际上已经达到的目的的话，那么，当时所有俄国人的一个共同愿望（把法国人从俄国赶出去，消灭他们的军队），那么，问题就十分明显，塔鲁丁诺战役正是因为矛盾而出，所以恰好是那个时期所必需的战役。

In this dissertation, the design principle of the approach of typical fuse-warhead matching was given. According to the principle, this dissertation constructs four kinds of matching ways of fuse with warhead on the basis of obtaining necessary intercrossing information.

文中还给出了典型引战配合逼近的设计准则，并在获取必需的交会信息的基础上，依据典型引战配合逼近的设计准则，构造了四种不同的引战配合方式。

"Although everyday levels of stress are necessary to stimulate normal brain development, excess levels can be harmful," said Carrion, likening the biological effects of increasing amounts of stress to an inverted U.

&尽管每天一定水平的应激是刺激正常大脑发育所必需的，但是过度的应激水平却是有害的。&

Benzoate (400 mg/kg) or creatinine (400 mg/kg), two inhibitors of DAAO, blocked D-NNA-induced pressor responses in rats. Furthermore, the addition of the pure DAAO significantly potentiates L-NNA production rate in kidney homogenates by approximately 2-folds. The in vivo and in vitro results suggested that DAAO plays an essential role in the pressor responses elicited by D-NNA.

体内实验显示，DAAO的选择性抑制剂苯甲酸钠(400mg/kg)或肌酐(400mg/kg)均可在不同程度上抑制D-NNA升压作用，进一步研究发现，肾脏或肝脏DAAO酶液在外加DAAO后可提高D-NNA的手性转化约2倍，表明DAAO对于D-NNA在体内的手性转化是必需的。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。