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。
1·To quickly spot outbreaks and prevent epidemics, WHO has supported the Ministry of Health to build a disease surveillance system involving over 200 medical experts and staff.
为了迅速发现流行病的暴发并预防它的蔓延，世界卫生组织已帮助卫生部建立了一个涉及200多名医疗专家和职员的疾病监测系统。
2·Steffanie Strathdee is trying to stop the spread of HIV along the U.S.-Mexico border, and prevent epidemics in both countries.
斯蒂芬妮·斯特·拉斯迪致力于防止艾滋病在美国与墨西哥边境传播，从而向两国蔓延。
3·In the 19th century, cholera became one of the world's deadliest diseases. Cholera epidemics spanned the entire world creating what is known as a pandemic.
在19世纪，霍乱成为世界上最致命的疾病之一，它在整个世界的蔓延使它成为一种大流行病。