useful-life

基本解释

I hear this not so much as advice as useful, potentially life-saving information, which I didn't know before.
我听到类似的于生命有益的且在此之前我并不知道的的信息，我会感激不尽，不会有任何的反感。
In Jiyang depression, the locations of exploration well given by3D seismic allow useful-life possible about 5years.
在济阳坳陷中，三维地震提供探井井位的有效年限大致在5年左右。
The proliferation of scholarly sources in the mass communication field adds to the information explosion that routinely abbreviates the useful half-life of knowledge throughout the discipline.
大众传播领域学术来源的扩散导致了信息爆炸，而信息爆炸简化了整个学科有用的半衰期知识。

Even small changes in what we eat and how we prepare our food can be very useful, says physician David Servan-Schreiber, author of "Anti-Cancer, A New Way of Life".
- And it's worth--; it's sort of a useful test for asking yourself -- what are the things you must value in life-- to ask, what would you choose to do if you knew you had five years, ten years, ? what have you?
而这值得;,这算是一种很有用的测试,用来问自己什么是你在生命中必须珍惜的事-,问你会怎么选择,如果你知道自己还有5年，10年，之类的时间？
耶鲁公开课 - 死亡课程节选

The analogy is useful because real-life recessive genes, such as those for eye color, hair color and other traits, follow this same set of rules.
FORBES: Harry Potter, Science Teacher
What Google gets from Buzz is a new means of organization, one that should make Google an even more useful part of life--with the not-incidental effect of improving its ability to sell advertising on its search results and mail.
FORBES: Magazine Article

使用寿命
In recent years, laser surface modification of dies of ductile iron has been an important method to improve its wear resistance and useful life.
对球墨铸铁冲压模具的激光表面处理已成为改善其耐磨性、提高使用寿命的重要方法。
有效寿命