adders

n.

a person who adds numbers

a machine that adds numbers

small terrestrial viper common in northern Eurasia

同义词：common viperVipera berus

1. Adders are often found in heathlands and woods across Europe.
   蝰蛇常见于欧洲的荒地和森林中。
2. Although adders are venomous, their bites are rarely fatal to humans.
   虽然蝰蛇是有毒的，但它们的咬伤很少致命。