idle [sth] awayvtr phrasal sepphrasal verb, transitive, separable: Verb with adverb(s) or preposition(s), having special meaning, divisible--for example, "call off" [=cancel], "call the game off," "call off the game."
(time, hours: pass lazily)
虚度光阴 xū dù guāng yīn
懒散度过
The teenagers idled the summer away in the house instead of making themselves useful.