必不可少

Today, of course, turquoise is a fashion essential.

今天，当然是时装必不可少绿松石。

I have known many a man pass for a miser, by saving a penny and wrangling for twopence, who was undoing himself at the same time by living above his income, and not attending to essential articles which were above his 'portee'.

我知道很多节约一便士和两便士的争吵，谁是取消在上述同一时间，他的收入生活自己一个人考上一个守财奴，而不是他的出席，以高于'portee'是必不可少的物品。

It may be asked Is the absence of unanimity an indispensable condition of true knowledge?

人们会问：难道真确的知识是以不见一致性为必不可少的条件吗？

Core protein, which is very conservative, can induce high level of humoral and cellular immunity. For these years, Core antigen was expressed in E.coli successively. But E.coli is uncapable of managing gene expression and protein procession like eukaryotic cell.

HCV核心蛋白高度保守且有很强的免疫原性，可诱发高水平的特异性体液免疫及细胞免疫，是HCV诊断试剂中必不可少的组分之一。

The acceleration is indispensable as a state-variable for precise analysis of the dynamic response of a drive system. This is because it represents the direct, undelayed response of a mass being moved in reaction to all the forces acting on it.

加速度是必不可少的一对驱动器的系统，这是因为它代表着直接的，毫不拖延地的群众正在反应，反应的所有部队行事提出精确的分析动态响应状态变量。

One method of preserving it is, to use it as sparingly as possible; avoiding occasions of expense by cultivating peace, but remembering also that timely disbursements to prepare for danger frequently prevent much greater disbursements to repel it; avoiding likewise the accumulation of debt, not only by shunning occasions of expense, but by vigorous exertions in time of peace to discharge the debts, which unavoidable wars may have occasioned, not ungenerously throwing upon posterity the burthen, which we ourselves ought to bear.

在你们可能被邀参与的所有变革中，你们应当记住，要确定政府的真正性质，正如确定人类其它体制一样，时间和习惯至少是同样重要的；应当记住，要检验一国现存政体的真正趋势，经验是最可靠的标准，应当记住，仅凭假设和意见便轻易变更，将因假设和意见之无穷变化而招致无穷的变更，还要特别记住，在我们这样辽阔的国度里，要想有效地管理大家的共同利益，一个活力充沛的、并且能充分保障自由的政府是必不可少的。

Therefore, it is necessary for modern enterprises to supply reliable and real-time information and services by utilizing computer systems, more and more departments especially those pivotal departments have been unprecedentedly relied on computer systems, however, it is unavoidable for the hardware and software of a computer to have a breakdown, which may certainly results in unmeasured losses.

对现代企业来说，利用计算机系统来提供及时可靠的信息和服务是必不可少的，越来越多的行业、部门，尤其是关键部门，对计算机系统呈现出前所未有的依赖性。但是计算机的硬件和软件都不可避免地会发生故障，会带来无可估量的损失。

Thus Tylor holds as proved that religion and morality stand on independent grounds; that, while lower races have a code of morals, yet their religion--animism--is unmoral, and thus the popular idea that the moral government of the universe is an essential tenet of natural religion simply falls to the ground.

因此， tylor举行，作为证明，宗教和道德的立场，独立的理由；，而较低的赛事有一个守则，道德，但他们的宗教-万物有灵论-是u n moral，因此，流行的思想，道德，政府的宇宙是一必不可少的特尼特自然宗教只是下降到地面。

Be upbeat is also a rule. I think.

我想，乐观也是必不可少的。

Besides its role in oxygen transport and utilisation, iron is also essential for many enzymes.

除了其在运输和利用氧的作用，铁，也是必不可少的许多酶。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。