swab例句

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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