Biuniqueness
双向单一性
🗣️ 情景例句
The cost of housing's too high for you here.
这里的房子对你们来说太贵了。
Success grows out of struggles to overcome difficulties.
成功来自于克服困难的斗争。
What will be the population of these countries in the year 2000?
2000年不太发达国家的人口将是多少？