Bcnf
BCNF范式
🗣️ 情景例句
Are you a citizen of the People's Republic of China?
你是中华人民共和国的公民吗？
Who is he?
他是谁？
For the first time in his life, he became the proud owner of a bed which had springs and a mattress.
他平生第一次自豪地拥有了一张既有弹簧又带床垫的床。