interpenetrate
v[I,Tn]
penetrate (each other), esp so as to lose individuality; spread through (sth) thoroughly in each direction 互相渗透(尤指因而失去原有特性); 贯穿; 扩散
two cultures, originally distinct, which have so interpenetrated (each other) as to become virtually a single culture 两种起源截然不同的文化互相渗透以致实际上已融为一体.