And they laughed at him. For 20 years, they called this guy "the mosquito man." But he ran an experiment in people, right? He had this hypothesis, and he tested it in people.
人们都取笑他，之后的20年里人们称他为"蚊子先生" 但他在一些人身上进行了实验 他有了这个假设然后在人们身上进行测试