[语法] 这个表面超级简单的句型，就是很难解释清楚，我尽力了...

原句是：

Central Park has long provided a refuge from the anxieties and stresses of daily life, perhaps never more so than during the coronavirus siege...

我们先把这个句型拎出来，一会儿再来看整句话的翻译：

never more so than + 某个时间段

合在一起，【never more so than + 某时间段】意思是，没有任何时候比某时间段更为如此，换言之，某时间段最为如此。

例句：

He had a tendency for violence, never more so than after drinking.

再回到原句：

Central Park has long provided a refuge from the anxieties and stresses of daily life, perhaps never more so than during the coronavirus siege...

前半句说“中央公园给人们提供了一个逃离生活焦虑和压力的避难所”，后半句说 never more so than during the coronavirus siege，是说在新冠疫情封城期间，（中央公园的这种功能）最为明显。