If one thing coexists with another, they exist together at the same time or in the same place. You can also say that two things coexist .
例句
Pockets of affluence coexist with poverty...少數富裕地區與貧困地區并存。Bankers and clockmakers have coexisted in the City for hundreds of years.銀行家與鐘表匠已經在倫敦城共同存在好幾百年了。