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...少数富裕地区与贫困地区并存。Bankers and clockmakers have coexisted in the City for hundreds of years.银行家与钟表匠已经在伦敦城共同存在好几百年了。