Heptoxide
[建] 七氧化物
🗣️ 情景例句
You're lovelier than your pictures.
你比你的照片可爱多了。
After eating breakfast,I go back upstairs again.
在吃早餐以后，我再回楼上。
He noticed at once that discipline was slack: the Danes had the self-confidence of conquerors, and their security precautions were casual.
他马上发现丹麦军纪律松弛，他们以征服者自居，安全措施马马虎虎。