┌───────────────────────┐
What we see is that there are in fact two entangled traditions of “knocking on things for good luck”: touching iron, and touching wood. We also find that they are widely distributed, but also have a pretty clear cluster around the Mediterranean and Europe.
。关于这个话题，一键获取谷歌浏览器下载提供了深入分析
'Gradual downward curve'
Currently there are 850,000 patients on the waiting list in England requiring planned treatment to their joints – the largest of any speciality.