They are mired in a vicious circle in which the lack of access to basic services is both cause and result of poverty, discrimination, marginalization and exclusion.
他们身陷一个恶性循环，即缺少基本服务既是造成贫穷、歧视、被边缘化和被社会排斥的原因，又是贫穷、歧视、被边缘化和被社会排斥的结果。