本期我们将揭晓Asian longhorned beetle的昆虫名称、特征以及入侵新土地的精彩过程。

　　名片：光肩星天牛Asian longhorned beetle (ALB)

　　Native habitat: 中国，朝鲜，台湾

　　Mode of transit: 中国运船上的木质板条箱

　　Invasive in: 纽约城（1996）， 芝加哥（1998），奥地利（2001）

　　Also found in: 加拿大，奥地利，法国，意大利

　　Characteristics: 通过蛀洞和毁坏内部给阔叶树带来伤害 Damages hardwood trees by making holes and destroying the interior.[interior: The interior of something is the inside part of it.]

　　那么这种ALB是如何从亚洲运送到其他国家的，这些国家又是如何处理这些入侵者的？

　　Beetles often drop down from trees onto the tops of cars and trucks, and are thus transported and spread to new areas.Beetles会降落到车顶，然后被运送且散布到新的地区。Spread to new areas 中的spread,也可以用到virus上面，除了病毒、害虫以及一些会给环境、生命带来危害的事物，没有规律的分散作，都可以用spread.

　　Although the beetles have moved slowly in the U.S., their effect is devastating.即使天牛在美国扩散得比较慢，但是这个影响是灾难性的。[Devastating：If you describe something as devastating, you are emphasizing that it is very harmful or damaging.也可以用destructive来形容灾难性的毁灭。]

　　为何说是灾难性的：为了控制这种天牛的侵蚀，超过1.5万棵树被砍掉。

　　In one city, more than 15,000 infected trees were cut down to control the spread.[infected: An infected place is one where germs or bacteria are causing a disease to spread among people or animals.在这里，infected并不是指疾病的这种传染，而是被ALB蛀洞的、毁坏的树木]

　　但是，这种消灭天牛的方式，并不可取。因为成本太高。

　　Destroying all beetles in an area is very expensive andtime consuming. [time consuming: x 消耗时间的。If you consume something, you eat or drink it.Consume是消耗的意思，可以搭配：time consuming, energy consuming, money consuming.]

　　科学家们针对这种invasive species还在研究当中：如何彻底铲除ALB。

　　Many scientists are trying to determine how to get rid of this invasive beetle and prevent its spread. [determine: If you determine something, you decide about it or settle it.例句：We must take into our own hands the determination of our future.]

　　小伙伴们，所以目前对于ALB（光肩星天牛）的处理方式还没有给出，invasive species给人类带来的经济和环境损失非常之大，最尴尬的是，罪魁祸首就是人类自己。

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