1973年，中国在全国范围内实行计划生育。翻译成英文

The Birth Control Policy has been implemented all over China since the year 1973.

Since 1993， the family plan has been implemented in all country in China.

In 1973, family planning was carried out in the whole country of

China.

China has started to implement the Family Planning nationwidly in

1973.

In 1973 in China, the one-child policy started to be in practice nationwide.

In 1973,the whole country was involved in the action of "One Child Policy"