In this note, we present constructive bijections from Dyck and Motzkin meanders with catastrophes to Dyck paths avoiding some patterns. As a byproduct, we deduce correspondences from Dyck and Motzkin excursions to restricted Dyck paths.

翻译：在本说明中,我们从Dyck和Motzkin的暴徒身上,向Dyck的路径展示了具有建设性的两条路段,避免某些模式。 作为副产品,我们从Dyck和Motzkin的探索中推断出限制Dyck路径的通信。