vt.& vi.砍伐（lumber的过去式与过去分词形式）； 双语释义：n.(名词)[U]木材，木料 planks,boards,etc. cut from logs[U]杂物，破烂儿 useless things in a housev.(动词)vi. 笨重地行进，行动迟钝，隆隆驶过 move in a heavy or noisy wayvt. 堆满无用的东西 fill with useless thingsvt. 〈非正〉给…增加麻烦；拖累 cause difficulty to sb, espec