any of various venomous snakes, including the rattlesnakes, that have a heat-sensitive pit on each side of the head and hollow perforated fangs: subfamily Crotalinae
| 单词 | pit viper |
| 释义 | pit vipernounany of various venomous snakes, including the rattlesnakes, that have a heat-sensitive pit on each side of the head and hollow perforated fangs: subfamily Crotalinae |
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