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Many wooden shipping crates that enter the U.S. contain hungry stowaways: invasive species of insects. Although these pests often dine on trees, they also devour a different resource: money.
通過(guò)航運(yùn)入境美國(guó)的很多木箱中攜帶了大量饑餓的偷渡者：入侵物種——昆蟲(chóng)。這些害蟲(chóng)?？惺蓸?shù)木，但事實(shí)上，間接遭罪的是人們口袋里的錢(qián)……

After dividing up the invaders into three categories based on their diet—some insects bore through wood while others chew foliage or slurp sap—researchers chose the most damaging species from each category. Then they analyzed the cost of these “poster pests” to five sectors: federal and local governments, households, residential property values and timber values. The non-native bugs cost local governments a whopping $1.7 billion every year, while also gobbling up $830 million dollars in residential property values. [Juliann E. Aukema et al., "Economic Impacts of Non-Native Forest Insects in the Continental United States," in PLOS One]
研究人員按照昆蟲(chóng)的食物將它們分成三類(lèi)：一類(lèi)鉆枝干，一類(lèi)吃樹(shù)葉，一類(lèi)吸樹(shù)汁，然后從這三類(lèi)中挑出破壞性最強(qiáng)的物種，以此分析了這些大牌們?cè)谖鍌€(gè)不同環(huán)境（聯(lián)邦、各地政府、一般家庭、物業(yè)、木料）下的散財(cái)能力。這些蛀蟲(chóng)每年能啃掉當(dāng)?shù)卣块T(mén)高達(dá)17億美元，物業(yè)受損額達(dá)8.3億美元。

To keep the ravenous insects from causing more economic damage, one of the study’s authors, Juliann Aukema of U.C. Santa Barbara, urges stronger regulations on international trade. Bug-sniffing dogs might help. After all, they have a vested interest in keeping trees healthy.
為避免這幫貪婪的蛀蟲(chóng)造成更大的經(jīng)濟(jì)損失，本研究作者之一，加州大學(xué)圣芭芭拉分校的朱利安·澳柯瑪，呼吁對(duì)國(guó)際貿(mào)易加強(qiáng)約束。臭蟲(chóng)狗就能幫上大忙，畢竟保護(hù)樹(shù)木也是有既得利益滴~~

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