virus怎么造句？

1.There are many different strains of flu virus. 流感病毒有很多不同类型。2.Hackers are said to have started a computer virus. 据说黑客们已经开始传播一种新的电脑病毒。3.This virus infected thousands of computers within days. 这种病毒在短短几天内感染了数千台计算机。