board [sth] up, board up [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."
(cover temporarily with panels)
用木板封住…
They boarded up the windows before the hurricane arrived.