Factors other than its legality are more important in lowering the abortion rate.

相比堕胎的合法性，其他因素对降低堕胎率的作用更为重大。

Between 2002 and 2011—just before some states began to pile on restrictions—America's abortion rate dropped by 14%, largely because the rate of teenage pregnancy fell.

2002年至2011年间，即一些州出台堕胎限制条令之前，美国的堕胎率下降14%，这主要是因为少女怀孕率降低了。