HIV has tremendous destructive power inside the human body, but this kind of virus is extremely fragile. As soon as it leaves the human body and is exposed to the air, it quickly dies.
愛滋病毒雖然在人體內具有很大的破壞力，但這種病毒卻很脆弱，一旦離開人體暴露在空氣中，很快就會死掉。