Quadrivalency
n. 四价
🗣️ 情景例句
Ah, Richard, Marilyn, I want you to meet John O'Neill.
啊 Richard Marilyn 我向你们介绍John O'Neill。
He that once deceives is ever suspected.
骗人一次，受疑一世。
Thank you very much.
太感谢了。