Weishan Middle School Cheng Tingting [taI'fu:n]It is one of the worst storms(风暴,暴风雨). [st?:m]How does a typhoon happen?How many parts does it have?Let's enjoy reading !Read quickly and try to find the answers.1.How many parts does a typhoon have?2.Should we stay inside when a typhoon happens?A typhoon has two par..