4. When barotrauma has occurred in the middle ear, it is not unusual for the diver to have a sensation of pressure or fullness and decreased hearing.
当中耳受到气压性创伤的时候，潜水者会经常有压力、塞和听力下降的感觉。
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5. Although decongestant medications may be helpful in salvaging a diving vacation if symptoms are mild, they do not necessarily prevent serious sinus or ear barotrauma.
6. Although decongestant medications may be helpful in salvaging a diving vacation if symptoms are mild, they do not necessarily prevent serious sinus or ear barotrauma.
