bolus

/ˈboʊ.ləs/

名词

（尤指咀嚼过的）一团东西
They found a large bolus of clogged material in her stomach.
他们发现她的胃里堵了一大团东西。
一片药；一剂药
Patients were given boluses of 20 or 30 μg of fentanyl.
病人注射了20或30微克芬太尼。