Adder-subtracter
[计] 加减器
🧩 词语组成解析
adder
['ædə]
n. 加法器，（欧洲产）蝰蛇（小毒蛇），（北美产无毒的）猪鼻蛇;
subtracter
[səb'træktə]
n. 减法器;
🗣️ 情景例句
But it's fun.
但很有趣。
Why are you so happy?
你为什么这样快乐？
It was used for keeping tea hot after it was made,said Wei Hua. It was filled with hot water.
“那是在茶沏好后用来保温的，”魏华说，“用来装热开水的。”