必需的

If vitamin A is to inspect amaranthine the important matter that forms a need character, severe shortage can bring about A of achromatopsia C vitamin also is place of normal and skeletal development is indispensible, the meeting when lack causes ossification and broken framework between lopsided.

如维生素a是视紫红质形成所需要的重要物质，严重缺乏会导致色盲c维生素a也是正常骨骼发育所必需的，缺乏时会导致成骨与破骨之间的不平衡。

Therefore, it is necessary for a high performance conferencing system to remove the acoustic echoes.

因此，对于高性能的会议系统来说，消除回声的影响是必需的。

When additional information about a substatus code is required, it is provided in one of the following sections.

在谈到一子状态代码的其他信息是必需的，它提供了以下的部分。

Werewolf, part of the Advance Guard that helps Harry in his escape from the Dursley house -- a necessary part of the team, being the only member Harry knew well and would trust at sight.

狼人，是帮助哈利逃离德斯礼家的先遣警卫成员——而且是一个必需的成员，因为他是唯一一个哈利很熟悉，而且一见到就会信赖的成员。

We may ask outside the law ,' Did he kill those men intentionally?' Inside the law the cognate question is ' Did he kill them with such malice aforethought as is required to constitute murder?

而在法律范围内，同一性质的问题则是"他是基宇[MS19] 法律规定为构成谋杀所必需的恶意预谋而杀死他们的吗"？

This is usually performed under a local anesthetic, and often means that more extensive surgery is not required.

这是通常的表现下，局部麻醉剂，而且往往意味着更广泛的手术是不是必需的。

The results suggested that selenium might antagonize the neurotoxicity of fluoride on behavior and morphology.

硒是人体必需的微量元素，大量研究表明：适当浓度的硒对氟中毒有较强的拮抗作用[5～ 7] 。

Early diagnosis, proper utilization of MR imaging, and radical resection of diseased vertebrae and soft tissues followed by anthelmintic treatment are essential to control disseminated spinal hydatidosis and prevent recurrence.

早期诊断，合理应用磁共振成像，根治性切除病变椎骨及软组织以及之后的驱虫治疗都是控制播散的脊柱棘球蚴及预防复发所必需的。

All the essential materials for the Saint's biography are to be found in his writings, especially in those written after the year 350, when the Apologia contra Arianos was composed.

所有必需的材料为圣人的传记，是被发现在他的著作，特别是在这些书面报告后，一年350 ，当纵容矛盾arianos组成。

I am not wealthy, nor are my sisters or brothers, but we regard this expense as a necessity – not a luxury.

我不富有，我的姊妹兄弟也如此，可是我们认为这是必需的花费－不是多余的。

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％。