Pentoxide
n. [化]五氧化物
🗣️ 情景例句
Her efforts were rewarded by good results.
她的努力获得了良好的结果。
All time is no time when it is past.
光阴一去不复返。
The bird covered the distance in three minutes.
这只鸟只用了3分钟就飞完了全程。