Septivalent
a. [化]七价的
🗣️ 情景例句
Thank you.
谢谢 。
Knowledge without practice makes but half an artist.
只有知识而无实践，只能造就半瓢水的艺术家。
For a few hours, you settle back in a deep armchair to enjoy the flight.
几小时之内，你躺在扶手椅上，享受着旅途的欢乐。