Septivalent
a. [化]七價的
??? 情景例句
I go camping in the mountains to enjoy the fresh air.
我去山中宿營以享受新鮮的空氣。
Steady wins the race.
從容就是贏得比賽的訣竅。
Pay cash for this one and then we'll see what we can do.
這次就請付現金，以后我們再看看