関連ワード:  give an example of a pull factor    give an example of a pull factor in urban china    give an example of a push factor    give an example of a push factor in rural china    give an example of a political pull factor detailed on the infographic    give an example of pull factors in migration    give an example of a push and pull factor    give one example of a pull factor    give two examples of pull factors    give 3 examples of a pull factor