I've been doing this job for 25 years, and I tell you you're going to stuff it up doing things this way.
我干了这工作已有25年了,告诉你,你这样做事情,会把事情办糟的。
Later it was found that there was a type of mosquito which acted as the carrier of this disease and passed it on to the rabbits.
后来又发现,有一种蚊子是传播这种疾病的媒介,能把此病传染给兔子。