notoriously

The mountain pass is notoriously dangerous during the winter months due to heavy snow.

(Chinese) 由于大雪，那个山口在冬季月份里是出了名的危险。

Legal documents are notoriously difficult to understand for those without professional training.

(Chinese) 对于没有受过专业训练的人来说，法律文件是出了名的难懂。