Formamidine
甲脒
🗣️ 情景例句
so I can study it.
以便我好好研究。
It never rains but it pours.
祸不单行。（不鸣则已，一鸣惊人。）
Half past four. Don't forget to tell Jim. I hope he can come too.
4：30。别忘记告诉吉姆。我希望他也能来。