Xor
abbr. “异”或（逻辑运算）（Exclusive OR）
🗣️ 情景例句
we would go down to the beach and catch crabs,
我们走到海边抓螃蟹，
He who never was sick dies the first.
小病不生，一病致命。
He suggested that a double railway-tunnel should be built.
他提议建一条双轨隧道，这样就解决了通风问题。