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从管子里看东西,比喻所见片面:~所及。
[look at sth. through a bamboo tube—have a restricted view] 从管中窥物,喻目光短浅,见闻不广 区区管窥,岂能照一隅哉!——《后汉书·章帝纪》 管窥止寸耳