Septavalency
(=septavalence)[化]七价
🗣️ 情景例句
What a pleasant surprise running into you.
碰见你真是太棒了！
I suggest that you tear up the letter and start over again.
我建议你撕破信再来一遍。
cloudless skies, savage sandstorms,
无云的天空，凶猛的沙暴，