入侵一个地区的物种会危害生态系统、农业和人类健康。
Species that invade a territory can harm ecosystems, agriculture and human health.
还不清楚这些地区要封闭多久，最终会造成什么危害。
How long the areas will remain closed, and what the ultimate damage will be, remains unclear.
如果在我国发生像法国一些地区一样的状况，那黄蜂造成的危害将会是惊人的，“布朗警告到。”
"If the same sort of situation that we have seen in certain parts of France is reproduced here, they can do considerable damage," Brown warns.
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