Local agriculture officials say farmers alone cannot solve the locust infestation.

当地农业官员说，仅靠农民无法解决蝗灾问题。

Officials in Italy say they're taking action to tackle an infestation of rats around the Colosseum in Rome.

意大利官员宣布正在采取行动，应对罗马斗兽场周边老鼠泛滥的问题。

And bark beetle infestations killed thousands and thousands of trees.

感染树皮甲虫使成千上万的树木死亡。

Twelve days later, he killed them and estimated the extent of their infestation.

12天后，他把这些幼蜂都杀了并测量它们体内感染程度。

The biggest infestation of locusts for at least 25 years wrought havoc on east Africa.

至少25年来最大的蝗灾给东非造成了严重破坏。

In recent years, warnings of infestations in ponds and lakes have become routine.

近年来，池塘和湖泊的虫害警告已成为家常便饭。

This new funding brings the U.S. humanitarian response to the infestation to $19 million.

这笔新资金使美国对虫害的人道主义援助达到1900万美元。

Warmer winters amplify a third major threat to the moose: infestations by winter ticks.

冬季蜱虫的侵扰。

And 80 percent of survey respondents want hotels to do the same-even if the infestation is long gone.

80%的受访者希望酒店也能公开类似信息，即使虫害早已不复存在。

Dr Paz knew from past work that sheep with severe worm infestations tend to have abnormal bacterial populations in their faeces.

Paz博士从过去的工作中了解到，患有严重蠕虫感染的绵羊的粪便中往往细菌种群不正常。