不可或缺

Computer technology has become a major part of people's lives.

计算机技术已成为人们生活中不可或缺的一部分。

Thirdly, the drop in price and the simultaneous improvement in the functions have made it possible for an average person to make use of a cell phone.

最后，手机迅速降价，同时其功能迅速改进，使得普通人都使用。手机的广泛应用，使它已成为人们日常生活中越来越不可或缺的一部分。

In my opinion ,there has been only one indispensable man in the history of t he world .

我认为，在人类历史中，只有一个人是不可或缺的，他就是亚当。

In my opinion ,there has been only one indispensable man in the history of the world .His

我认为，在人类历史中，只有一个人是不可或缺的，他就是亚当。

In my opinion ,there has been only one indispensable man in thehistory of the world .

我认为，在人类历史中，只有一个人是不可或缺的，他就是亚当。

In modern society, elevator has become a indispensable Manned Tools in High-rise building.

在现代社会中，电梯已成为高层建筑中不可或缺的载人工具。

Maintaining enough serfs in manorial system and also undertaking lord's demesne normally management are contents of manorial administration and management. These activities are so important to stability of the manorial system.

保有必要充分的劳动力要素、保证领地的正常经营等构成管理活动的内容，这些活动都是庄园稳定经营不可或缺的。

Marine cargo insurance is the necessary part of international trade system.

海上货物运输保险是国际贸易体系中不可或缺的环节。

As one of the externalized symbols of Islam, masjid plays an indispensable role in the development of Islamic culture and society.

作为伊斯兰教的重要外化象征之一，清真寺具有的诸多功能在推动伊斯兰社会与文化的历史进程中，发挥着不可或缺的作用。

The mass media has become one of the necessary parts in our daily life.

大众传媒已经成为人们日常生活中不可或缺的一部分？

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。