Pap smear
noun (North American English)(British English smear test, smear, cervical smear)
a medical test in which a very small amount of tissue from a woman’s cervix is removed and examined for cancer cells 涂片试验(从妇女子宫颈取少许组织,以检查是否有癌细胞) Oxford Collocations DictionaryPap smear is used before these nouns:- test