Such measures are desirable, if not essential.
这些措施即使不是必要，也是可取的。
Although not essential, some prior knowledge of statistics is desirable.
统计学的知识虽非必要，但最好是学过一点。
Money is not essential to happiness.
金钱对于幸福并非必不可少。
Catching to fashion is not essential to the happiness of all women.
赶时髦并不是对所有妇女的幸福都重要。
不过这并不是最重要的。
这是最不重要的。
Manager's request is frequently not essential.
主管的要求，经常是没必要的。
A helpful but not essential feature is database navigation.
一个非基本但十分有用的特性是数据库导航。
There is a version for your phone, but it's not essential.
有一个是给你手机用的，但是不怎么好用。
Note that the use of the Velocity in this context is not essential.
注意，在本文中，Velocity的使用并不是必不可少的。
For now, we'll tuck this feature away as nice-to-have but not essential.
就现在而言，我们将去掉这个特性，将其作为“有则更好”，而非必要的特性。
For deletions this is not essential, but for other operations it can be important.
对于删除来说这并不重要，但对其他操作来说可能是重要的。
Do you have features in your product that are not essential to your customer's needs?
你的产品中有用户不需要的功能吗？
However, heparin was not essential for the expression of the biological activity of FGF.
然而，为FGF的生物学的活动的表情肝磷脂不是本质的。
Therefore, it's not essential for a service to be a Web service, which is only one type of service.
因此，服务并不一定是Web服务，后者只是服务的一种类型而已。
Conscious awareness may help improve our behaviour, butit does not necessarily do so and is not essential.
意识可能会改进我们的行为，但是那并不必要也不重要。
It is fine to scan your whole code base for opportunities to use these features, but it is not essential.
在整个代码库中寻找使用这些特性的机会是不错的做法，但这不是必需的。
People often ask me, "Why should I care if a species goes extinct? It's not essential to my daily life, is it?"
人们总是问我：“我为什么要关注物种灭绝呢？它在我的日常生活中又无关紧要，不是吗？”
The particular markup codes that go to the output live in yet another file, for organizational not essential reasons.
转至输出的特殊标记代码还是存储到另一个文件中了，这是由于组织的原因而非本质原因。
"However, although a parent's desire to find a good match (for their child) is wise, it's not essential," he added.
他同时还说：“不过，尽管父母想为自己的子女找到一个合适的配偶是明智的，但绝非必要之举。”
Omega 9 is not essential. It has fewer demonstrated health benefits, and our bodies produce it from other unsaturated fats.
欧米加9是非必需的，它很少表现对健康的好处，我们的身体能从其他不饱和脂肪中自己合成。
If mobile TV is not used enough to make money from advertising, it is also not essential enough to persuade lots of people to pay.
如果手机电视不能从广告商那边赚取足够多的钱，那么说服很多人去购买这种手机也就没什么必要了。
Canonical service components, that is, services designed as services from the ground up, are not essential to make this scheme work.
要使这套模式发挥作用，那些正规的服务组件，即那些从底层设计出来的服务，并不是必需的。
NOTE: Past development experience, especially with Eclipse, is helpful but not essential to appreciating the topics presented in this article.
注意：过去的开发经验，尤其在Eclipse 方面的开发经验，对实现本文所述主题很有帮助，但这还不是最根本的。
The sales information gets updated constantly in the sales table, but it is not essential that the executives get up-to-the-second information.
销售信息经常更新到sales表中，但这不是说经理们必须得到最新的信息。
Now that you’ve identified the essential, you can identify what’s not essential. What things in your life are not truly necessary or important to you?
既然你已经把重要的标记出来了，你也能将不重要的标记出来，在你生活里并非真正必要或重要的有哪些事？
Uniqueness: Although not essential, a site usually offers something unique either in terms of coverage or format compared to a similar print resource.
独特性：虽然并非必不可少，但与类似的纸质印刷材料相比，无论是覆盖范围还是编排格式方面，网站在提供信息时应具有一定的独特性。
Uniqueness: Although not essential, a site usually offers something unique either in terms of coverage or format compared to a similar print resource.
独特性：虽然并非必不可少，但与类似的纸质印刷材料相比，无论是覆盖范围还是编排格式方面，网站在提供信息时应具有一定的独特性。
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