plumbn. 鉛錘、垂直a. 垂直的vt. 使垂直、探測vi. 成垂直學術名詞鉛錘:天文學、機械工程、土木工程、地質學測錘:測量學英文釋義the metal bob of a plumb linemeasure the depth of somethingweight with leadexamine thoroughly and in great depth