xuè / xiǎo / bǎn / de / zhǔ / yào / gōng / néng / shì / zhǐ / xuè / hé / cù / jìn / shāng / kǒu / yù / hé血小板的主要功能是止血和促进伤口愈合。The main function of platelets is to stop bleeding and promote wound healing.