viper毒蛇;
adder蝰蛇;
pit viper蝮蛇;rattlesnake响尾蛇;
cobra眼镜蛇;
coral snake银环蛇;
grass snake草蛇;
water snake水蛇;
sea snake海蛇;
python巨蟒;
anaconda水蟒;
venom毒液;
fang毒牙
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