1993年与1970年相比，在当年出生的孩子中，一孩率、二孩率分别由20.7%和17.1%上升为61.3%和27.5%，多孩率则由62.2%下降到11.2%。

• Compared with 1970,of the babies born in 1993 the first-birth rate and second-birth rate increased from 20.7 percent and 17.1 percent to 61.3 percent and 27.5 percent respectively,and the multiple-birth rate dropped from 62.2 percent to 11.2 percent.