Permutability
换排性, 转置性, 交换性
✅ 同义词
🗣️ 情景例句
He's going up the ladder pretty quickly.
他真是平步青云。
He irons sweaters every day.
他每天都烫衣服。
When he travelled across India, he travelled hard-seat, unreserved, together with peasants and other ordinary people.
当他穿越印度旅行时，他与农民及其他普通人一起乘坐"没有被预定的硬座。