vt.使垂直；用测铅测；探索；adj.垂直的；adv.恰恰，正；垂直地；vi.做管道工；n.铅锤，测锤； 变形： 过去式：plumbed过去分词：plumbed现在分词：plumbing第三人称单数：plumbs 英英释义： plumb[ plʌm ]n.the metal bob of a plumb line同义词：plumb bobplummetv.measure the depth of somethingweight with leadexamine thoroughly and in grea