这是必不可少的，因为我们当前未提供定义监测集键之间或者甚至不同监测集之间的关系的功能。
This is necessary because we currently don't provide the capability to define relationships between monitor set keys or even between different monitor sets.
下面介绍的一些小发明已经成为我们生活中必不可少的一部分，甚至没有人称其为“发明”。
We bring you some of the inventions which became an integral part of our lives and didn't even claimed the title of an invention.
甚至当他睡觉的时候，在他甜美的梦中，网上冲浪的画面也是必不可少的。
Even when he is sleeping, the image of surfing on line is also indispensable in his sweet dreams.
有人的老板很严厉，有人发现社交礼仪必不可少，甚至还有人发现身体素质尤为重要。
One has a strict boss, one discovers that social etiquette is essential, while another even finds that physical fitness is important.
也是使助剂生产企业提高产品质量、扩大市场销路、甚至进入国际市场的一个必不可少的条件。
To granulate powdery products is one tendency of plastics additives industry because it may improve quality of product, enlarge the sale and is a indispensable condition to enter worldwide market.
尽管现代人的生活节奏很快，甚至来不及打电话或发一封问候的邮件，不过走亲访友的习俗仍是必不可少的。
Although busy people choose to send greetings by telephone ore-mail, the old tradition of paying visits is still popular.
虽然看似并不重要，甚至还有些麻烦。 但是要是你想有一种健康的生活方式，那么足够的睡眠是必不可少的。
While it might seem unimportant, or potentially even cumbersome, sleep is one of the things you can't skimp out on if you're trying to live a healthier lifestyle.
虽然看似并不重要，甚至还有些麻烦。 但是要是你想有一种健康的生活方式，那么足够的睡眠是必不可少的。
While it might seem unimportant, or potentially even cumbersome, sleep is one of the things you can't skimp out on if you're trying to live a healthier lifestyle.
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