For the population to stand still, each woman needs to have 2.1 children (one child per parent, plus an extra 0.1 to account for women who die young, are infertile, or otherwise do not have children).
要维持人口不变，每位育龄妇女就要抚养2.1个孩子(每位父母一方抚养的一位孩子不能生育，或者反过来说没有孩子，外加0.1个点补充年轻死亡的女性)。
The best analogy is with a parent teaching a child to ride a bicycle: the prudent approach is to stand close enough to catch the falling tot, and only remove the training wheels later on.
最好的类比就是，一位家长在教孩子骑自行车：谨慎的方法就是，站在孩子近旁防止摔倒，稍后再拆除辅助车轮。
It also spawned a new term for another breed of parent – the cat dad, who is laid back, stand-offish and slow to anger.
“虎妈”还衍生出另一个新词“猫爸”，形容随和、矜持而不易动怒的父亲。
It also spawned a new term for another breed of parent – the cat dad, who is laid back, stand-offish and slow to anger.
“虎妈”还衍生出另一个新词“猫爸”，形容随和、矜持而不易动怒的父亲。
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