Biuniqueness
双向单一性
🗣️ 情景例句
How many days will it take for my mail to reach its destination?
我的信件到达目的地要用几天？
I like your style.
我喜欢你做事的方法。
and makes them resolve that in future they will not talk to their parents about the places or people they visit.
决心以后不再向父母讲述去过的地方和见过的人。