Often there are emotional reasons paralleling the financial ones.往往情感方面的原因和经济方面原因同时存在。Hepatitis D exists only in combination with the hepatitis B virus.丁型肝炎只与乙型肝炎病毒同时存在。Two strains in his philosophy cohabit in each of his major works.他哲学上的两种倾向在他每一部主要著作中都同时存在。