Adder tree
[计] 加法树
🧩 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;
tree
[tri]
n. 树;木料;树状图;宗谱;
vt. 把…赶上树;使处于困境;把鞋型插入（鞋内）;
🗣️ 情景例句
I intend to major in economics in college.
我想在大学里主修经济学。
This airline has a good safety record.
这家航空公司有很好的飞行安全记录。
They were in fashion last year and the year before last.But they're not in fashion this year.
这鞋在去年和前年时兴，而今年已不流行了。