Home / HSK Vocabulary / HSK 5 / 漏洞 漏洞 lòu dòng HSK 5 · C1 Meanings leak hole gap loophole Quick facts HSK LevelHSK 5 CEFRC1 ← Back to HSK 5 word list Practice 漏洞 with flashcards MandoBridge uses spaced repetition to help you remember HSK 5 vocabulary — free on iOS and Android.