拭子，读音shi zi，英文swab，是指绕在小棍一端的一小团有吸收能力的材料(如棉花)。
在猪流感爆发的早期，医生用喉拭子为人们测试猪流感。
In the early days of the swine flu outbreak, doctors took swabs and tested people for swine flu.
研究人员分别在典礼前后对14名学校官员采集手拭子。
The researchers swabbed the palms of 14 school officials before and after graduation.
这项装置检测从一个病人喉咙里用棉棒粘取的物质(以咽拭子为检测标本)。
The device tests material collected from a quick swab of a person's throat.
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