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- 聚会进行到一半，我太太发病了，我们只好赶紧离开。
Halfway through the party my wife become ill and we have to leave in short order.
- 年龄的大小往往与发病率有关。
We can often correlate age with frequency of illness.
- 这个地区的犯罪率、发病率、失业率等很高。
This area has a high incidence of crime, disease, unemployment, etc.
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