1·In stands dominated by trees such as aspen, however, incipient gypsy moth outbreaks are quickly suppressed by viral epidemics.
然而，在以白杨等树为主的林分，最初的舞毒蛾爆发很快就被病毒流行病所抑制。
2·The government proposes to reduce the population by using a virus that has caused devastating epidemics in rabbit populations elsewhere.
政府计划通过使用一种病毒来减少兔子的数量，这种病毒已经在其他地方的兔子种群中造成了毁灭性的流行病。
3·Unsafe water will lead to epidemics.
不安全水将导致流行病。
4·In some areas death rates have actually risen as a result of extreme poverty and epidemics.
在某些地区，由于极端贫困和流行病，死亡率实际上已经上升。
5·Attempts to foresee epidemics such as these have traditionally relied on fieldwork on the ground.
试图预知这样的流行病，传统上依赖于地面上的野外作业。