n.蝰蛇；加法器
An adder attacked my father. 一條小毒蛇攻擊了我父親。
The adder is also the only British snake with a poisonous bite. 蝰蛇在英國也是唯一一種有毒的蛇。
The adder has been functionally verified and simulated by using PSPICE. 該加法器已用PSPICE仿真工具進行了功能驗證和仿真。
n.階梯；梯子；梯狀物
n.階梯；梯子；梯狀物
n.膀胱；囊；囊狀物
加法器
膽瓶
