必不可少

When the steel bar is corroding, the water and oxygen must be existed in the int...

氧气和水是钢筋锈蚀时的必不可少的两个基本要素。

But wait for an element because of weather, outdoors external condition, shoe still is indispensable protective tool, how to help darling choose most stick crural shoe?

但是因为天气、户外客观条件等因素，鞋子还是必不可少的保护工具，如何帮助宝宝选择最贴脚的鞋子呢？

This paper sets out to make a contribution to the definitional and relationship discourse surrounding the creative industries because it is essential to any public or private sector policies aimed at engaging with these businesses.

本文旨在为创意产业的概念界定贡献一己之力。这是因为，概念和关系的界定对政府制定与创意产业相关的产业政策必不可少。

Will it 2 be when we are totally disarmed, and when a British guard shall be stationed in every house?

中的it都指示时间，是必不可少的，但在译文中都被省略了。

It has been proved that TR mutation was related to dyskeratosis congenita, and TR could function as the template in telomere DNA synthesis.

并且对细胞分裂等细胞学事件必不可少，已证明TR 突变与先天性角化不良等疾病相关。

Many sound installations have profited by applying a variety of electroacoustic techniques and technology in their creation and spatial presentation.

很多音响装置艺术的成功都与各种各样的电子音乐技术有直接的关系，当然，创作技巧与空间展示技巧也是必不可少的。

We find that if we want to be a energic competitor and leader ,we must attach importance to the company's management of labor power's development and cultivation .

联想就是通过对人才的开发与培养来保证强劲的竞争优势，如采用各种培训措施来增加员工的自身价值，采用各种激励措施来鼓励员工等，这些都是企业做好人力资源管理工作必不可少的。

Vaccination has become an important compponet of control where Salmonella enteritidis has emerged as a public health concern.

在某些肠炎沙门氏菌泛滥之地，免疫接种已经成为一项必不可少的控制举措。

The settlement adopted in this project is the necessary settlements in the exploit of epeiric sea petrol, which solves the technique problems as the In-process quality control and maintenance of petroleum pipe line and power cable and plays an important part in safety in production of the cables and pipes under the sea as well as the protection of the environment.

该装置是浅海海洋石油开发中必不可少的装备，解决了浅海海洋石油开发中石油管道和电缆的巡检和维护的技术难题，对保证海底管线电缆的安全生产和环境保护有着重大的现实意义。

Some epicontinental minerals are very useful .

制鞋是一种有用的、必不可少的行业。

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。