swab
noun [ C ] uk/swɒb/ us/swɑːb/
拭子，消毒棉;用药签取下的化验标本
a small piece of soft material used for cleaning a cut or for taking a small amount of substance from a body, or the substance itself that can then be tested
The nurse cleaned the cut on my leg with a swab. 护士用一根药签清理我腿上的伤口。
"I'm just going to take a swab of your ear," said the doctor. 医生说：“我要用棉签从你耳朵里取样检查。”
US (US trademark Q-tip); (UK cotton bud)药签，棉花棒
a small piece of soft material on a short stick
Use a cotton swab to clean your ears. 用一支棉花棒清理你的耳朵。
swab
verb [ T ] uk/swɒb/ us/swɑːb/ -bb-
(WASH)
（用湿布或拖把）清洗，擦洗（尤指船上的地板）
to wash a surface, especially the open, flat areas of a ship, with a wet cloth or mop
(MEDICINE)
用棉花棒清理（伤口）;用药签取下（化验标本）
to clean a cut or take a small amount of substance from a body using a small piece of soft material