roll [sth] off [sth]vtr 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."
(cause [sth] round to fall off [sth])
把...从...上滚下来
把...从...上扔下来
Roll the marble off the table—the cat will chase it!