Septavalent
a. [化]七价的
🗣️ 情景例句
Yes.
是的。
Mettle is dangerous in a blind horse.
瞎马鼓勇气，正是危险事。
Buried somewhere in deep grass there is a rusting lawn mower which I have promised to repair one day.
深草丛中的某个地方有一台正在生锈的割草机，那就是我曾答应某日要修理的割草机。