Quadravalence
四价
🗣️ 情景例句
What did I forget?
我忘记什么？
Poverty is apain, but no disgrace.
贫困是痛苦，但不是耻辱。
still persists, however; and it is as fierce as it ever was.
依然在进行着，而且和以前一样激烈。