Tritoxide
[医] 三氧化物
🗣️ 情景例句
See you in front of the museum at five o'clock.
五点钟博物馆前再见。
But Li Ming has promised to come home for the summer vacations.
但是李明已经答应暑假回家。
He will be away for two months.
他要离开两个月，