Focus on the pronunciation of mainstream
English definition of “mainstream”
/ˈmeɪnstriːm/ verb [T]
› HR, SOCIAL RESPONSIBILITY to include people who have particular difficulties or needs in the same schools or places of work as everyone else: When the children of immigrants are mainstreamed, they learn the new language within months.mainstream sb into sth People with disabilities are being mainstreamed into community jobs.
› to make something become accepted as normal by most people: The recession is mainstreaming the part-time economy.