pack [sth] downvtr 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."
(make [sth] more compact)
压紧 yā jǐn
压实
Irene packed down the blanket so that it would fit in the drawer.