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swab的第三人称单数（三单）为：swabs...
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swab的现在进行时为：swabbing...
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to take a throat swab用棉签从咽部采集化验样品Administer the salve to the sunburned area with a cotton swab.请用棉药签把药膏敷在晒伤的地方.She used cotton wool to swab her wounds when they bled.伤口渗出来的血水需要棉花来抹掉....
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n.（医用的）拭子，药签，（用拭子取下的）化验标准vt.用拭子拭抹或擦净（某物），（用拖把、抹布等）擦洗（某物）...
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swab的现在完成时为：swabbed...
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swab的一般过去时为：swabbed...
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swab的复数形式为：swabs...