phrase something unpleasant that cannot be avoided: 无法避免的事情 Going bald is just a fact of life.谢顶是无法避免的事情。 Unfortunately for you, exams are a fact of life. There's no point complaining about rising prices. They're a fact of life. Long waits at security checkpoints are a fact of life in this area. There may be some colleagues you find hard to get on with, but that's a fact of life. See also
fact
fact of life | American Dictionary
fact of life
idiom something unpleasant that cannot be avoided: Driving to work on overcrowded highways is a fact of life for millions of commuters.