Home HSK Vocabulary HSK 4 保守 保守 bǎo shǒu HSK 4 · B2 Meanings conservative to guard to keep Quick facts HSK LevelHSK 4 CEFRB2 ← Back to HSK 4 Overview Practice 保守 with flashcards MandoBridge uses spaced repetition to help you remember HSK 4 vocabulary — free on iOS and Android. ← All HSK 4 vocabulary