yí / dǎo / sù / shì / yóu / yí / dǎo / fēn / mì / de / néng / bāng / zhù / tiáo / jié / xuè / táng胰岛素是由胰岛分泌的,能帮助调节血糖。Insulin is secreted by the pancreatic islets and helps regulate blood sugar.