滴水不漏 (dik6 seoi2 bat1 lau6) — rigorous (argument) in Cantonese
dikˍ₆滴seoiˊ²水batˉ¹不lauˍ₆漏Mandarin Pinyin: di1 shui3 bi4 lou4
Meaning of 滴水不漏
nounrigorous (argument)
nounwatertight (lit., "not one drop of water can leak out")
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