zdi tei tor tei lujvo

x₀: Time flies when you're having fun. (nullary predicate)

In notes:

vonrafpemjvo: x₁ is a Lojban compound-word idiom made of four combining forms (rafsi); x₁ is a "Lojbanic chengyu/yojijukugo".
su'onre: {su'o re} is the plural quantifier (nullary predicate)