A far bigger cause of concern than the growth of national groups, however, is the increasing number of migrants who return to their countries of origin.
然而，比民族群体增长更令人担忧的是越来越多的移民返回其原籍国。
2
Although some magazines will maintain national audiences, a large number of magazines will entertain narrower audiences.
尽管一些杂志面向的是全国读者，但大部分杂志的受众依然较小。
3
A number of fitness spas existed prior to this aerobic fitness movement, even a national chain with spas in most major cities.