2. The first genetically modified animal to leave the lab will probably not be one designed to control a
pest.
第一只离开实验室进入野外的转基因动物也许不是设计好去控制害虫的。
3. The creatures, which normally prey on
pest insects, had been altered in a first step toward making them more effective against
pests.
那些正常捕食害虫的动物,首先是改变基因使其朝更有效的捕食害虫能力方面发展了。