Cách sử dụng
The word 'swab' is usually used in the medical field. It is a small stick with a cotton tip which is used to collect samples for testing. For example, a doctor may use a swab to collect a sample from a patient's throat to test for infections. 'Swab' can also be used in cleaning, for instance, you can use a swab to clean small nooks and crannies that are hard to reach with a cloth or sponge. The word 'swab' is commonly used in hospitals, labs, and also in cleaning industries.