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v.經(jīng)歷( plumb的第三人稱單數(shù) )，探究，用鉛垂線校正，用鉛錘測量...

This new play really plumbs the depths of unpleasantness.這出新戲?qū)嵲谟憛挊O了....

plumbs的音標(biāo)：...