听力损失 hearing loss
- 听力损失可能不会在几年内出现。
Hearing loss may not be apparent for years. - 我们也知道听力损失情况随年龄而异。
We also know that the incidence of hearing loss varies by age. - 到40岁,听力损失人群扩大到10%。
By age 40, the incidence of hearing loss rises to 10 percent.
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