Iron plays a role in a number of essential functions in the body.
铁在一系列重要职能的机构数目的作用。
Each and every cell needs water to perform its essential functions.
每个细胞都需要水来执行他们的基本功能。
Given the heart's many essential functions, it seems wise to take care of it.
考虑到心脏的许多重要的功能，照顾好它是相当明智的。
This question must be accompanied by a job description covering the essential functions.
这个问题必定伴随着一份对工作主要职责的描述。
Functions provide two essential benefits to the serious programmer.
函数为严肃的程序员提供了两个基本优势。
Water is essential for all healthy body functions.
水对于所有健康的身体功能运作是必需的。
Essential condition: Normal use of the watch functions!
基本条件：手表的功能正常使用！
Ability to make sound decisions in a manner consistent with the essential job functions.
以一贯的方式与必要的工作职能做出正确的决定。
The first three functions are essential, and the latter two are harder to achieve.
前三项职能是基本的，后两项职能是要求比较高的。
These minerals are also essential to many bodily functions.
这些矿物质也是许多身体机能所必需的。
Functions of real variable is an essential basic theory in modern analysis.
实变函数论是现代分析必不可少的理论基础。
Ability to stand, walk and sit and continuously perform essential job functions.
能持续因工作需要的站立，行走等。
Ability to stand, walk and sit and continuously perform essential job functions.
能持续因工作需要的站立，行走等。
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