Pentacid
a. [化]五价的
🗣️ 情景例句
All window seats are sold out.
所有靠窗口的位子都卖光了。
It's a beautiful country with many large lakes.
它是一个有许多大湖的美丽的国家。
Oh, thanks very much. I'd love to. What time is it going to start?
噢，非常感谢。我当然想去。聚会什么时候开始？