Idemfactor
n. [数]幂等矩阵, 等幂矩阵
🗣️ 情景例句
Looking around. Especially with a purchase of this kind.
到处看看， 特别是这一类买卖。
You have to be on time. Don't be late.
只准早到，不许迟到。
and you avoid the frustration of arriving at the very moment when the train is drawing out of the station and being unable to get on it.
而且可以避免那种正好在火车驶出站时赶到车站，因上不去车而感到的沮丧。