The course of life is full of ups and downs.

人生的历程充满了起伏。

Life is full of ups and downs and you need to stay sober in both.

生命(就像过山车)充满了起和伏,希望你在两种状态都能保持清醒的头脑.

Life is full of ups and downs, and you need to stay sober in both.

生命（就像过山车）充满了起和伏，希望你在两种状态都能保持清醒的头脑。

Life is full of ups and downs, especially when you’re an elevator operator.

生活充满着上下起伏，特别当你是一个电梯操作工时。