This is the 1542nd most frequent Chinese word.
一辈子
A lifetime.
In this sentence, “一辈子” emphasizes the lifelong desire to be together; it denotes the entirety of one's lifespan.
我希望能和你一辈子在一起。
I hope to be with you for a lifetime.
Here, “一辈子” refers to the entire span of someone's life dedicated to achieving a goal or purpose.
他奋斗了一辈子,为了他的梦想。
He worked hard for a lifetime for his dream.
In this sentence, “一辈子” illustrates the profound and long-lasting impact something can have on an individual throughout their life.