noun · any of various venomous snakes of the subfamily Crotalinae, characterized by heat-sensing pit organs between the eyes and nostrils

蝮蛇的头部通常呈三角形，是一种极具危险性的毒蛇。

noun · the specific species Gloydius halys, found in Russia, Mongolia, and China

这种蝮蛇在西伯利亚的森林和草原中十分常见。