It is similar to a sinking fund but not mandatory.
回购基金类似于偿债基金，但不是强制性。
Hotel guest or waiter is preferred, but not mandatory outstanding person conditions.
酒店迎宾或服务员者优先考虑，优秀者条件可放宽。
Foreign firms can only sell commercial auto insurance now but not mandatory auto insurance.
外国公司现在只能销售汽车商业保险，但汽车强制险却不可以。
Experience working with an application server and relational database is beneficial but not mandatory.
有应用服务器和关系型服务器的工作经验更好，但不作硬性要求。
To get the most value from this tutorial, it is recommended (but not mandatory) that you be familiar with the following.
为了能够从本教程中取得最大的收获，我们建议您(但并非必须)对如下内容有所了解。
When Congress modified the Paulson plan, it introduced provisions that made such a capital injection possible, but not mandatory.
国会后来对保尔森方案进行了修改，引入了让资本注入成为可能的条款，但却不是强制性的。
Using the lab service account is highly recommended, but not mandatory because you can also use local accounts on each machine.
强烈建议使用实验室服务帐户，但不强制使用，因为您还可以在每台计算机上使用本地帐户。
Experience working with various project building technologies such as Ant, autoconf, make, and nmake is beneficial but not mandatory.
如果有各种项目构建技术的经验(如ant、autoconf、make和nmake)也很好，但不做强制性要求。
Salary based on skill level, English-Speaking for top positions but not mandatory for all positions. sushi cook experience is a plus.
工资基于技能水平，较高职位需要英语能力但其余职位并不强制要求英语。另，有寿司制作经验的厨师优先。
The use of those technologies is very likely, as they fit the requirements well, but it is not mandatory.
这些技术的使用非常接近也非常符合需求，但是不必强制要求使用它们。
Mandatory rotation would probably not do much harm; but it might well not do much good, either.
法定轮换制不大会带来坏处，但也许也无法使情况变得多好。
Mandatory locks are widely available, but not universally. Linux and system V-based systems support them, but some other UNIX-like systems don't.
强制锁是可用范围很广，但它不是通用的；linux和基于System V的系统支持这种锁，但其他的类unix系统不支持它。
Enter the website URL and also sitemap URL (sitemap is not mandatory, but it is highly recommended to add one).
键入网站地址，也可以是网站地图的地址(网站地图地址不是必填的，但是强烈建议添加一个)。
As for mandatory retirement, Taylor seems to forget that this was not abolished by the universities, which would love to bring it back, but by an act of Congress.
对于强制性退休，泰勒似乎忘记了这并不是由大学废除的，而是由议会的一项法案废除的，各个大学是希望恢复这个制度的。
It is not mandatory to use them, but you should specify a default severity for any rules that you create.
对它们的使用并不是强制性的，但是您应该为您创建的所有规则都详细说明它们默认的严重性。
Similarly, Personalized Delivery and Population Application patterns are mandatory, but we do not have these requirements.
同样，个人交付和通用应用程序模式也都是强制性的，但我们并不需要。
There are other honorable bills out there that have much to recommend them but fall short because they do not include mandatory greenhouse gas reductions or a price signal.
那里还有很多其他值得推荐但没有推荐的可敬议案因为它们没有包括规定的温室气体减排或一个代价信号。
This mapping is the common practice, but it is not mandatory, though.
这种映射是常见的使用方式，但不是必要的。
Participation in Halloween is not mandatory, but opting out won't stop it happening.
参加万圣节之夜并不是强制的，但是选择不过并不能躲开万圣夜。
Note that this is not mandatory to be identical, but it makes the things easier during the configuration restore process, which is described in the next section.
注意，不一定要与现有安装完全相同，但是这样做会简化配置恢复过程（配置恢复过程将在下一节介绍）。
'Usually for ice diving it's mandatory to use a rope but here the lake is not completely closed.
通常情况下冰川潜水是必须要使用绳索的，但是这里的这个湖并不是完全封闭的。
This is not mandatory but strongly recommended.
这不是强制的，但我强烈推荐使用两个。
Unlike the required attribute, the MANDATORY attribute will not start a transaction if one does not exist, but rather will throw an exception indicating that a transaction is required.
与REQUIRED属性不同，MANDATORY属性将不会开始不存在的事务，而是抛出一个异常，指示需要事务。
Comments are not mandatory parts of the Code, but provide examples and other clarification.
评述不是准则的强制要求内容，而是提供了例证及其他的澄清。
Use of all seven techniques is not mandatory, but doing so can substantially reduce the chance that relevant candidate services have been missed.
我们并不一定需要使用所有7种技术，但是这样做可以大幅降低漏掉相关候选服务的概率。
Programming is not mandatory for this type of position, but it is a big help. Some of the ways that learning programming can help you include
并不是强制选择此类编程，但是它对你会有很大的帮助。
Not only does this space accommodate mandatory safety requirements, but it also reduces the visual weight of the liftstructure itself and accentuates the vertical proportions of the structure.
这种设计不仅提高了安全性能，而且在视觉上减轻了电梯结构的厚重感，同时强调了结构的垂直比例。
Not only does this space accommodate mandatory safety requirements, but it also reduces the visual weight of the liftstructure itself and accentuates the vertical proportions of the structure.
这种设计不仅提高了安全性能，而且在视觉上减轻了电梯结构的厚重感，同时强调了结构的垂直比例。
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