Home HSK Vocabulary HSK 4 地下 地下 dì xià HSK 4 · B2 Meanings underground subterranean covert Quick facts HSK LevelHSK 4 CEFRB2 ← Back to HSK 4 Overview Practice 地下 with flashcards MandoBridge uses spaced repetition to help you remember HSK 4 vocabulary — free on iOS and Android. ← All HSK 4 vocabulary