必不可少

A good sleeping bag is an essential part of every campers equipment.

一个完好睡袋是每个露宿者必不可少装备。

For a successful class humour is indispensable.

要在课堂上取得, 默是必不可少。

This is an indispensable part of his creed.

这是他信条中必不可少一部分。

There are certain things that are absolutely basic to the maintenance of a good relationship.

要保持良好关系, 有些条件是必不可少。

Many people believe that grammar is the sine qua non of language learning.

许多人为学习语法在学习语言中是必不可少。

Dream is the necessary psychal power in the common life.

理想在生活中是一种必不可少精神动力。

Water is a necessity of life.

水是生命必不可少。

Control of the two main plantain diseases, yellow sigatoka (Micosphaerella musicola) and black sigatoka (Micosphaerella fijiensis), is indispensable.

种主要病害黄香蕉叶斑和黑香蕉叶斑病进行控制是必不可少。

The employer would provide lodgeable accommodation and other necessary facilities for the Second Party in manner of collectively.

雇主向乙方统一提供适宜居住住宿和必不可少设施。

This is an indispensable book.

这是一本必不可少书。

In design I find the values of ergonomy, ecology, economy, ethics and esthetics equally important – they are all complementary parts in a successful design project.

在设计创作中，我发现能分化、生态、经济、道德和审美同等重要价值观—它们都是一个地设计项目必不可少组部分。