The best selection both for the whole country and for the sub-regions is the case of "middle or large specifications of one couple one child for one generationfertility policy for another 15 years".
在全国层面和省区层面有着较大普遍性的优选方案是15年后实行中口径或大口径的一代独生子女政策。
2
Germany not only has low fertility now, but has had for more than a generation.
德国不仅是现在出生率低，而且是一直低了有一代人。
3
It takes another generation before the effect of smaller families-that is, of lower fertility-starts to show up in the overall population figures.