Biuniqueness
双向单一性
🗣️ 情景例句
And this is my sister Susan and her husband Harry Bennett
这是我妹妹Susan和她丈夫Harry Bennett
I should not hesitate a moment to prefer the latter.
我会毫不犹豫地选择后者。
The mobile phone is as popular as the beeper nowadays.
现在手机和寻呼机一样普及。