dān hé xì bāo shì miǎn yì xì tǒng de zhòng yào zǔ chéng bù fen，jù yǒu tūn shì gōng néng

单核细胞是免疫系统的重要组成部分，具有吞噬功能。

Monocytes are an important component of the immune system with phagocytic function.