医生用无菌棉签清理了我的伤口。

The doctor cleaned my wound with sterile ___swabs.

护士用棉垫清洁了病人的伤口。

The nurse ___swabbed the patient's wound with a cotton pad.

护士用棉签取了鼻拭子做新冠病毒检测。

The nurse collected nasal ___swabs for the COVID-19 test.