If there are no truly non-venomous snakes, were the so-called non-venomous snakes, like constrictors and pythons, were they venomous at some point in their evolution?
如果没有真正的无毒蛇，那些所谓的无毒蛇，比如蟒蛇和巨蟒，在它们进化过程中的某个阶段是有毒的吗？
2
Kingsnakes are a group of beautiful constrictors found in many parts of the United States.
王蛇是一群在美国很多地方都有发现的美丽蟒蛇。
3
Then I would never talk to that person about boa constrictors, or primeval forests, or stars.