每日雅思词汇：蛇年说蛇 viper遥蛇; 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遥液; fang遥牙
