提高学术期刊编辑的读者意识，是发挥学术期刊最佳社会效益，赢得读者欢迎和刊物生存的必然条件。

To improve the reader's awareness of academic periodical editors position is an essential condition to gain optimum social benefits & the readers favor.

youdao

对此我虽然持怀疑态度，但也不能妄下结论，因为在其他国家必然有油田已具备采用与美国相同技术的条件。

I doubt it, but we cannot be sure, because there are bound to be fields in other countries ripe for exploitation with the same technology.

youdao

如果可以取得必然的无条件的成功，你敢成为什么？

What would you dare to be if you were guaranteed unconditional success?

youdao

But in fact, logically speaking at least, variability, although it's a requirement for unpredictability, doesn't guarantee unpredictability.

但实际上，至少在逻辑上讲，可变性虽然是不可预见性的必要条件，但是不可预见性却不是必然。

耶鲁公开课 - 死亡课程节选

And they're higher than perfect competition, which of course, has zero profits in this case.

并且它比完全竞争条件下的利润高,这也是必然的,因为完全竞争下的利润为零

耶鲁公开课 - 博弈论课程节选