It helped the country become the European Union's top performing economy for the past two years.

它帮助该国成为过去两年欧盟表现最好的经济体。

In this simulation, the worst performing strategies quickly shrink and go extinct, while the top performing strategies become more common.

在这个模拟中，表现最差的策略迅速萎缩并消失，而表现最好的策略变得更加普遍。