几年前,在美国加州圣克拉拉谷发生的地中海果蝇灾害,使当地果农蒙受了4000万美元的损失,州政府为扑灭虫灾花费了1亿多美元。地中海果蝇是蒙混过关传入美国的,成为新大陆一大隐患。缘于此,为了拒害虫于国门之外,各国海关对入境交通工具和旅客要实行检疫,其严格程度比查毒品走私有过之而无不及。然而,对于除害兴利的六足“使者”,人们却要打开国门欢迎。 A few years ago, the Mediterranean fruit fly disaster in Santa Clara Valley, California, cost the local farmers $ 40 million and the state government spent more than $ 100 million on extermination. The Mediterranean fruit flies pass through the United States and become a major hidden danger in the New World. Because of this, in order to refuse to pest insects in the country, the customs of all countries to carry out quarantine of inbound vehicles and passengers, the strict degree of narcotics smuggling than nothing. However, for the six-pronged “messenger” for the purpose of removing the evil, people have to open the door to welcome.