必需的

For you it is necessary, and to save prisoners of war, and to seize enemy technique, and to penetrate to the secret base of enemy, and to undermine depositories with the strategic reserves.

就你而言它是必需的，和解救战俘，和抓住敌人技术，和对敌人的秘密基础穿透，和和策略的预备品渐渐破坏存储处。

As water resource is the indispensable material in life and its security is emergent, the development of water security evaluation and assurance system is desiderated so that we can recognize the.

由于水资源是维持生命所必需的物质，其安全保障问题迫在眉睫，因此亟需建立起水安全评价体系及水安全保障体系，通过系统的方法和技术认清水安全形势，探讨保障水安全的措施和方法。

As water resource is the indispensable material in life and its security is emergent, the development of water security evaluation and assurance system is desiderated so that we can recognize the water security position through system method and can discuss measures and methods to ensure water security.

由于水资源是维持生命所必需的物质，其安全保障问题迫在眉睫，因此亟需建立起水安全评价体系及水安全保障体系，通过系统的方法和技术认清水安全形势，探讨保障水安全的措施和方法。

"This increase is necessary to stabilize a deteriorating situation in Afghanistan."

&这样的增兵对稳定阿富汗日益恶化的局势是必需的。&

The best structure of the specifie oligosaccharide recognized by PCL was Man〓GlcNAc〓. The modifiention of Trp residuce of PCL would effect the hemagglutinating, which indicating the Trp is necessary for the binding site of PCL.

用化学修饰的方法表明色氨酸残基是PCL活性所必需的；CNBR裂解和圆二色谱研究表明，高级结构的改变影响了PCL血凝活性。

Memorizing facts is fine, but it is GREAT when you can apply your knowledge.

单纯的记忆是必需的，但是探求新知识是重要的。

As to these problems, a novel MBR named internal circulation membrane bioreactor is developed, in which the aeration not only supplies the required oxygen, but is utilized for the circulation of nitrified wastewater. It carries out the nitrogen and carbon removal of domestic wastewater in a single treatment unit. Simulated domestic wastewater is used in this research.

针对这些问题，本论文提出了一种新型的膜生物反应器——内循环式膜生物反应器，使曝气不仅为处理过程提供必需的溶解氧，而且实现脱氮过程中必要的混合液回流，实现了脱碳、脱氮过程在一个单体设备中完成。

As I rifled through the fridge in search of the requisite condiments, I thought about what makes hard-cooked eggs mixed with mayonnaise devilish.

我一边从冰箱里搜寻一些必需的调味品，一边想哪种可以使煮过的鸡蛋与蛋黄酱完美的融合。

Solid rivets are used where great strength is required.

实心铆钉的使用，伟大的力量是必需的。

The prime minister now stands accused by many generals, more explicitly than is customary, of skimping on the men and kit needed for the Afghan campaign.

现在，首相备受许多将军的指责——克扣在阿富汗战争中必需的人员和装备是再清楚不过的了。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。