Usually, the doctor fires an alcohol spongeputs it inside the cup for a short while to make the cup a vacuum one, then he places the vacuum cup instantly over the selected spot of the skin.

• 通常，医生把一个点燃的酒精棉球放在杯子里一会儿以排出里面的空气使它成为一个真空杯，接着快速地把空杯子放在选定的皮肤上。