虽然这些镶板运来时经过了预处理，但是还需要涂上两层防腐剂进行最后的密封。
Though the panels come pre-treated, they needed a final sealing with two coats of preservative.
每根木材都被刨平了，切割成一定尺寸，并涂上了雪松防腐剂。
Every piece of timber was planed, cut to size and stained with cedar preservative.
每根木材都被刨平了，切割成一定尺寸，并涂上了雪松防腐剂。
Every piece of timber was planed, cut to size and stained with cedar preservative.
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