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。
最重要的是酚。
It is not essential that they have this.
它不是必要的他们有这。
English ability is helpful but not essential.
能英文交流为佳，但并非是必需的。
Manager's request is frequently not essential.
主管的要求，经常是没必要的。
Words not in bold are useful, but not essential.
非黑体单词有用，但不是最基本的。
See now you still feel dynamic balance is not essential?
看到现在你还觉得动平衡可有可无吗？
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。
It's not essential to understand each word when skimming.
理解每个单词是没有必要的。
Time is always an indispensable person becomes not essential.
时间总是可以把一个不可或缺的人变得可有可无。
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。
A higher humidity can benefit your budgerigar, but is not essential.
较高的湿度可以受益的虎皮鹦鹉，但不是必不可少的。
Marvellous as it was, even the voice was not essential to the persona.
虽然李的声音极富魅力，不过他对于角色塑造的精髓也不在声音。
Some knowledge of quantum mechanics would be helpful but not essential.
掌握一些量子力学知识当然有帮助，但这并不是必须的。
I prefer to have a picture when doing this although it is not essential.
我喜欢有一幅当这样做，虽然它并不是必不可少的。
Information that's not essential is deleted and what's left is compressed.
不重要的信息被删除，其余的被压缩。
If you are not not essential, how would he sometimes hot and sometimes cold.
你若不是可有可无，他又怎么会忽冷忽热。
Understanding how snapshots work is helpful though not essential to using them.
懂得如何快照的工作是有益的，虽然没有必要应用它们。
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。
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。
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