Frequently used is the key here.
这里的关键是常用。
It was frequently used as a holy symbol.
这是常被用作一个神圣的象征。
The most frequently used are the first three.
最常用的是前三种。
The most frequently used tones are the first three.
使用最广泛的是前三种语调。
The most frequently used output device is the monitor.
监测仪最常用的输出设备是显示器。
Here is a description of the most frequently used commands.
这里有一个对最常用命令的描述。
More frequently used addresses display at the top of the list.
较常用的地址显示在列表的顶部。
Create string values to store frequently used information.
建立字串值，以储存经常使用的资讯。
Idea is a concept that has been frequently used in academia.
理念是学术界目前使用频率较高的一个概念。
Note the most frequently used words and get them into your resume.
注意最为频繁的用词，摘出用到你的简历中。
The popular words are those frequently used by the people at large.
普通词是人民大众频繁使用的词汇。
The spawn option is frequently used to contain more than one command.
spawn选项通常用于包含多个命令。
Listening is the most frequently used language skill in everyday life.
每天生活中最常用的语言技巧是听力。
The word institution is frequently used in many branches of knowledge.
制度是一个高频率使用的词。
We all know, English is the most frequently used language in the world.
我们也知道，英语是当今社会上使用的最多的一门语言。
An iron compound frequently used in the construction of magnetic cores.
一种铁的化合物，常用于制作磁芯。
The word has several meanings, but this one is the most frequently used.
这个词的涵义有很多，但常用的就这一个。
It is frequently used in those companies and countries with heavy debts.
通常被债务沉重的公司和国家采用。
There are also two highly specialized, less frequently used tools, as shown in Table 2
还有两个高度专门化的、不那么常用的工具，如表2 所示
I also place a piece near my computer, TV and other frequently used electrical gadgets.
另外在电脑，电视和其他经常使用的电器附近我都放了一块。
These words are frequently used in the College Entrance Exam, so pay more attention.
这些词是高考当中的高频词，所以要多加小心。
Frequently used in international trade to make funds available in a foreign location.
常用于国际贸易中，以使资金可在国外某地抵用。
The focus of this article is on one library, ReqPro.dll, which is the most frequently used.
本文关注点在其中的一个库上，ReqPro.dll，该库是使用最为频繁的。
Thee color most frequently used in paper cutting is red, which symbolizes health and prosperity.
剪纸最常用的颜色是红色，象征健康和兴旺。
The term congestive heart failure is frequently used to describe all patients with heart failure.
人们常用“充血性心衰”作为心衰的统称。
These objects are used frequently during the application design and development process.
在应用程序设计和开发过程中常常使用这些对象。
Imagine a world in which Alchemy is not only possible, but used frequently.
想象一下，在这个世界中，炼金术不仅是可能的，但经常使用。
Imagine a world in which Alchemy is not only possible, but used frequently.
想象一下，在这个世界中，炼金术不仅是可能的，但经常使用。
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