人生如梦，梦仍是梦。

All life is a dream, and dreams themselves are only dreams.

Source: Tatoeba

Sentence Composition

1 人生如梦 rénshēngrúmèng life is but a dream (idiom)
2 梦 mèng (bound form) to dream

classifiers: 場, 個
3 仍是 réngshì still
4 梦 mèng (bound form) to dream

classifiers: 場, 個