单词：epidemics
epidemics的用法和样例：
例句
- But he adds that such large losses to a population are not unusual in epidemics.但他同时指出，如果考虑到流行病，如此大规模的种群消失就习以为常了。
- Now that the epidemics which water-borne diseases can cause are understood,water supplies are organized to prevent them.既然已经了解到水传播的疾病能引起流行病，人们就组织好供水的工作以防止流行病的发生。
单词：epidemics 相关文章
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