Biuniqueness
双向单一性
🗣️ 情景例句
Remember Lillian?
还记得Lillian吗
She hesitated about what to do next.
他对下一步干什么拿不定主意。
Only a few kilometres. I think it's about seven. OK. We're all here, now.
谩Ｎ颐嵌嫉狡肓恕?