例如，在NB的森林里，过去的25年里，多种杀虫剂被喷洒以控制云杉蚜虫，一种经济上严重的病害虫。

In the forests of New Brunswick, for example, various pesticides have been sprayed in the past 25 years in efforts to control the spruce budworm , an economically significant pest.

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第一眼瞥去，这些蛾也长得完全一样，Miller说这个抽屉内仅有一种云杉蚜虫——北美洲东面树林内一类不知名的害虫。

The moths also look the same at first glance, and Miller says this drawer holds nothing but a single species of spruce budworm, an infamous pest of eastern forests in North America.

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