Boundary operator
[计] 边缘算子
🧩 词语组成解析
🗣️ 情景例句
My car just got wrecked, it's not the happiest day of my life.
我的车刚坏掉了，今天真不好过。
I have a fetish for flowers.
我非常喜欢花儿。
It is thought that they arrived more than 30,000 years ago by crossing a land bridge from Asia to America.
他们被认为是在3万多年以前从亚洲跨越一座陆桥来到美洲的。