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 word list Practice 保守 with flashcards MandoBridge uses spaced repetition to help you remember HSK 4 vocabulary — free on iOS and Android.