fact of life

基本解释

That is a fact of life. Luck favors the prepared, and it also favors the persistent.
这是生活的真相，幸运喜欢有准备的人，同样会垂青于那些持之以恒的人。
He wanted, perhaps, to write about Aids as a fact of life rather than a fact of death.
或许，他想将艾滋病作为人生的事实来写作，而不是将它看作为死亡的事实。
While some of us may know more about this than others, it is a fact of life, and there is no way around it.
然而我们中的一些人比起其他的，了解这个更多，这是生活的一种真相，并且在它周围没有其他方式。

Darwin would later say that this work caused him to realize the struggle for limited resources was a fact of life.
So that would probably be de Broglie's answer for why, in fact, we're not observing the wavelength behavior of material on a day-to-day life.
所以那就可能是德布罗意关于,为什么我们无法再日常生活中,观测到物质的波动行为的答案。
麻省理工公开课 - 化学原理课程节选
My path in life was fundamentally altered by just a handful of courses at this place and this was in fact one of them.
在哈佛所学的一些课程,从根本上改变了我的人生道路,这门课就是其中之一。
哈佛公开课 - 计算机科学课程节选

This is a fact of life with which both individual and institutional investors have to deal.
FORBES: Do Mutual Funds Still Make Sense?

You say that something which is not pleasant is a fact of life when there is nothing you can do to change it so you must accept it.
If you tell a child about the facts of life, you tell him or her about sexual intercourse and how babies are born.